A typical scenario (an illustrative example based on common situations, not a review from any specific customer)

The Smell That Rises Through the Floorboards

Uncle Saman is sixty-eight and has lived all his life in a raised wooden house beside a small canal in Nong Chok. His father built it. Upstairs there are two bedrooms and an open veranda. The space under the house holds sacks of rice, farm tools, a motorbike and a bamboo platform where the grandchildren nap in the afternoon. At the back is a concrete kitchen added later, with a bathroom, a storeroom and a small bedroom used by his wife, whose knees no longer manage the stairs.

In late September 2026 the rain kept falling for days. The canal rose over its bank, flooding the space under the house, the concrete kitchen and his wife's bedroom. Saman and his son lifted the rice sacks onto the platform, but the bottom ones still got wet. The motorbike was pushed up to the main road. His wife moved upstairs, climbing one careful step at a time.

When the water left, the ground under the house was sticky mud. There was a sour, rotten smell from the soaked rice, a drain smell from the bathroom, and debris caught around the posts. In the kitchen the lower walls had a tide line and the wooden food cabinet was growing a white bloom. His wife's room smelled so musty that nobody wanted to go in. Strangest of all, although the upstairs bedrooms never touched the water, every night a damp smell drifted up through the gaps between the floorboards. The youngest grandchild began to cough, his wife developed an itchy rash on her legs, and Saman had a cut on his foot from wading.

His son, who works in the city, called to ask how to make this old house clean and safe again for elderly parents and small children. Many families in Nong Chok are asking the same question.

Nong Chok Floods 2026 and the Situation in East Bangkok

The following summarises news reports from late September to early October 2026. Figures can change daily, so check the latest announcements from government agencies and the Nong Chok district office.

• From 24 to 27 September 2026, Bangkok had continuous heavy rain, with about 300 mm in roughly 48 hours, according to news reports.
• On 26 September 2026 the BMA declared all 50 districts a disaster zone; eastern Bangkok was hit hardest.
• Governor Chadchart Sittipunt said the canals were full and drainage would take about two to three days after the rain stopped.
• Khaosod English reported on 29 September 2026 that Nong Chok was among the districts named in a flood-risk warning.
• According to the DDPM report of 2 October 2026, flooding affected 31 provinces plus Bangkok, with 1,245,581 households and 3,535,206 people affected, caused by heavy to very heavy rain together with runoff from the north.

Thai media compared the event with the 2011 flood, which older Nong Chok residents remember well, and one business report cited a Chamber of Commerce estimate of about 12,300 million baht in damage.

Why Recovery in Nong Chok Needs a Different Plan

Nong Chok is Bangkok's great farming district, crossed by Khlong Saen Saep and many smaller canals. Homes spread along canal banks and secondary roads such as Suwinthawong and Chueam Samphan. Three house types are common: the traditional raised wooden house, a wooden house with a concrete kitchen or rooms added at ground level, and newer single- or two-storey concrete houses built on family land.

Raised houses were designed to live with water, but today the space beneath them is often used for storage and parking, or bricked in as extra rooms. When the flood comes, whatever is stored there gets soaked and starts to breed germs. Gaps in the wooden floor above let damp air and odours rise into the bedrooms. Ground-level concrete extensions are the first part of the house to flood.

The water itself passed through rice fields, fish ponds, animal pens, septic tanks and rubbish heaps. It carried germs from human and animal waste and decaying organic matter. Wet rice, paddy and animal feed are a feast for mold and rats.

Every Kind of Germ Floodwater Brings into a Nong Chok Home

WHO, the US CDC and Thailand's Department of Disease Control all warn that after floods people should watch for gut infections, skin disease, leptospirosis and breathing problems caused by mold. For homes in a farming area like Nong Chok, these are the main threats.

Bacteria from Animal Waste and Sewage

Homes that keep chickens, ducks, goats or cattle close by, and homes on septic tanks, are likely to see floodwater carry faecal bacteria such as E. coli and Salmonella indoors. These stick to kitchen floors, wooden chopping boards, dishes, water jars and anything that was soaked. Eating or drinking something contaminated can cause diarrhoea, stomach pain, vomiting and fever. Households that rely on water jars or well water need extra care, because floodwater may have got into stored water.

Leptospira in Paddy Fields and Under the House

Leptospirosis is a disease rice farmers know by name. The bacteria come from the urine of rats and other animals, mix into water and mud, and enter through cuts or skin soaked for a long time. The space under a house full of wet rice and animal feed is exactly where rats like to be. Key symptoms are sudden high fever, headache and severe calf pain, usually within one to two weeks of wading. Anyone with these signs should go to hospital immediately and tell the doctor they waded or worked in the fields. Treated early, it responds well.

Viruses in Multi-Generation Homes

Many Nong Chok households include grandparents, parents and grandchildren. During the flood everyone squeezed upstairs together. Diarrhoea viruses such as norovirus and rotavirus, as well as respiratory viruses, then pass easily from person to person through hands, shared dishes and frequently touched surfaces. Handwashing with soap and cleaning surfaces matter a great deal right now.

Mold in Timber, Rice and Fabric

Wood absorbs moisture readily, so posts, floor joists, wall boards and wooden cabinets that stood in water take a long time to dry. WHO and CDC advise cleaning and drying within 24 to 48 hours to limit mold, which is rarely possible when water stands for days. Mold starts as a white bloom or green-black spots on timber, blankets, mattresses, mosquito nets and rice sacks. Moldy rice or food must never be eaten or fed to animals. Airborne spores cause allergies, sneezing and coughing and can trigger asthma, especially in older people and children.

Musty Air, Rotting Rice and Mud

Post-flood odours in Nong Chok homes are usually a mix: mustiness from mold in wood, a sour smell from fermenting rice and feed, drain smells from the bathroom and the smell of mud. They tell you the source is still there. In a house with gapped floorboards, the smell from below can reach the bedrooms all night.

Who Is Most at Risk

• Older people who struggle with stairs and sleep at ground level
• Young children who play under the house and by the canal
• Pregnant women, who should avoid wading and mud
• People with chronic illness such as diabetes, high blood pressure, kidney or lung disease
• Farmers and livestock keepers who wade daily to save crops and tend animals

The Impact on Nong Chok Families

Health Across Generations

When one house holds a seventy-year-old and a three-year-old, the risks stack up. Older people have chronic conditions, young children have immature immunity, and diarrhoea or a lingering cough in one person tends to spread to the rest.

Income from Fields and Ponds

Many families earn a living from rice, fish ponds, vegetables or livestock, so the flood hits both home and income at once. Limited money must cover house repairs, new seed and care for the sick. Recovery work done the wrong way and then repeated is a loss nobody can afford.

Time and Labour

After the water drops, the household divides its energy between rescuing the fields, caring for animals, cleaning the house and taking sick relatives to the doctor. Children working in the city take leave to help. Knowing the right sequence from the start saves a great deal of effort.

Old Houses with Deep Family Meaning

Many wooden houses in Nong Chok have passed through several generations. If mold is allowed to eat into the timber, or termites follow the moisture, damage can reach the structure. Caring for the house properly protects both the family's health and its memories.

Community Buildings

Community halls, mosques, temples, schools and early-childhood centres are where people gather. If they still harbour mold and musty air, the risk spreads to many people. Their recovery should be planned with the community committee or building caretakers.

Common Home Remedies and Their Limits

• Hosing out under the house and letting it dry by itself. Good for removing mud, but with continuing rain and no sun, timber and soil stay damp for a long time, especially under stacked items.
• Strong bleach. Fine on smooth surfaces, but it does not penetrate timber well and the fumes irritate older lungs. Never mix it with toilet cleaners; dangerous gases can form.
• Burning mosquito coils or rubbish to drive off smells. Smoke does not kill mold and adds harmful particles to the air.
• Drying soaked blankets and mattresses in the sun and reusing them. Sewage-soaked mattresses and pillows hold germs deep inside. The sun only reaches the surface; consider discarding them.
• Oiling or painting timber over mold. It looks fresh, but if the wood is still damp, the mold underneath returns.
• Air freshener. It hides the smell for a while but leaves the cause.

None of these is wrong, and some are necessary. What is missing is a step that treats the air and hidden corners of rooms that can be closed, after washing and drying.

WHD Ozone Disinfection for Homes in Nong Chok

World Health Disinfection (WHD) is based in Bang Khae, Bangkok 10160, and has no branch in Nong Chok. Our team can plan visits to homes and buildings in Nong Chok, with the date, route and coverage confirmed first by phone on 065-556-6294 or LINE @whd268. Many Nong Chok homes are deep down a soi or beside a canal, so the team checks access and standing water in advance and cannot promise same-day arrival.

What Ozone Does

Ozone (O3) is a strongly oxidising gas. Released in a sealed room, it spreads throughout, reaching cabinet corners, under beds, behind furniture and the whole volume of air. It breaks down the cell structures of viruses, bacteria and mold and splits odour molecules at the source, then reverts to oxygen (O2) with no chemical residue. According to testing certified by the company with Thailand's Department of Medical Sciences and Intertek (UK), ozone treatment eliminates viruses, bacteria and mold by 99.99%. See the certification documents.

An Honest Note for Raised Wooden Houses

Ozone works well in rooms that can be closed tightly. An under-house space open on four sides is not suitable, because the gas simply drifts away. For open space under the house, what works is removing wet items, shovelling out mud, washing, and letting sun and wind dry it. Enclosed rooms such as upstairs bedrooms, a concrete kitchen extension, storerooms, bathrooms and ground-floor bedrooms are where ozone helps most. The team will assess which rooms seal well enough and where gaps should be temporarily blocked before treatment.

Safety Rules Every Time

The treated room must be empty and closed. People, pets and plants must leave. If chickens or other animals are kept under or beside the house, move them away from the treatment zone too. Nobody re-enters until the rest and ventilation period set by the team has ended.

Ozone comes after mud removal, washing and drying. It does not replace cleaning, the replacement of rotten timber, or medical care. Anyone with fever, calf pain, diarrhoea or an inflamed wound after wading must see a doctor.

How the Work Is Done

1. Send photos on LINE and describe the house: wooden, concrete or mixed, which rooms flooded and for how long.
2. Room assessment. The team advises which rooms seal well enough, which should dry longer, and what to prepare.
3. Confirm route and date, checking vehicle access and whether road water has receded.
4. Prepare. People, animals, plants, rice and food out; gaps and vents sealed as advised.
5. Treat zone by zone, typically about 30 minutes per zone.
6. Rest and ventilate so ozone reverts to oxygen before anyone enters.
7. Aftercare advice on watching damp timber and what needs repair.

Ozone jobs worth 15,000 baht or more include a free medical-grade disinfectant spray, useful when several related households or a community building combine their work. Details on the ozone disinfection service page.

10 Reasons Nong Chok Homes Should Be Ozone-Treated After the Flood

1. It cuts the smell rising into bedrooms. Once the space below is cleaned, treating the upstairs bedrooms makes the air noticeably fresher.
2. It reaches gaps in timber walls and behind wooden cabinets where cloths cannot go.
3. No chemical left on wooden floors where children sit and older people sleep, because ozone reverts to oxygen.
4. It treats airborne mold, not only visible stains.
5. It reduces musty and rotting-rice odours at the source instead of covering them with smoke or perfume.
6. It is backed by testing: 99.99% elimination according to testing certified by the company with the Department of Medical Sciences and Intertek.
7. It is quick, about 30 minutes per zone, with little disruption to field work and animal care.
8. An older relative's room is ready sooner. A ground-floor bedroom should be treated with ozone before they move back.
9. It suits community buildings such as halls, classrooms and childcare centres; see the residential and building ozone service.
10. A final step before repairing and repainting timber, so repairs last. You can request an ozone quotation.

Before and After Ozone in a Nong Chok Wooden House

Note: results depend on the house, remaining moisture and replacement of damaged materials. Rotten or termite-damaged timber should be checked and replaced by a carpenter.

Example Case: Three Family Houses in One Compound in Lam Phak Chi

(An example case to show how the work is done, not a review from any real customer)

Nuch is the eldest daughter of a family with three houses inside one fence in Lam Phak Chi: her mother's raised wooden house, her brother's single-storey concrete house, and her own two-storey home. In late September the water flooded under her mother's house and covered the floors of the other two.

Once the water dropped, the family shovelled mud, washed the houses, threw out moldy mattresses and rice sacks, photographed everything for their records and let the houses dry for about a week. Nuch contacted WHD on LINE with photos of all three. The team advised that the open space under her mother's house did not need ozone and should simply be washed and sun-dried, while her mother's upstairs bedroom, the concrete kitchen extension and the two concrete houses were suitable. The kitchen door opening onto the under-house space should be temporarily sealed.

On the day, the team confirmed the route into the soi in advance. The family took Mother, the grandchildren and the chickens kept beside the kitchen to the far side of the land. The team worked zone by zone through all three houses. After the rest and ventilation period, Nuch said the musty smell that used to drift into her mother's room had faded a lot. Mother moved back to her own room, and the family planned to replace swollen wall boards the following month. Because the three houses were combined, the job qualified for the free medical-grade disinfectant spray.

The lesson: knowing which parts of a house to treat with ozone, and which need a different approach, makes the best use of money and time.

Recovery Checklist for Nong Chok Households

Safety First

• Switch off power before entering; have an electrician check sockets, wiring and water pumps that were submerged.
• Wear boots, gloves and a mask, cover foot wounds, and watch for snakes under the house and in piles of belongings.
• Do not drink from jars or wells the flood reached; use bottled water until you are sure.

Before Calling the Ozone Team

• Remove mud from under the house, the kitchen and ground-floor rooms; wash with clean water and detergent.
• Discard rice, feed, mattresses, pillows and fabrics that are moldy or sewage-soaked. Never eat or feed moldy rice.
• Open the house to sun and air; lift items off wooden floors so everything dries.
• Wipe high-touch surfaces, dishes and chopping boards with a disinfectant such as Chemgene, following the label.
• Have a carpenter check rotten or termite-marked timber.

On Ozone Day

• Move people, pets, nearby livestock and plants out of the zone.
• Take rice, food and medicine out of the room.
• Seal gaps and vents as the team advises.
• Do not re-enter before the rest and ventilation period ends.

After Ozone

• Watch posts, joists and wall boards for several weeks; if mold returns, find the damp spot.
• Store new rice and feed on raised shelves in closed containers.
• Anyone with fever, calf pain, diarrhoea or a red, swollen wound should see a doctor and mention flood exposure.

FAQ: Ozone Disinfection in Nong Chok After the Flood

Does WHD have a branch in Nong Chok?

No. We are based in Bang Khae, Bangkok. The team can plan visits to Nong Chok, with date and route confirmed first by phone on 065-556-6294 or LINE @whd268.

Can you treat the open space under the house?

We do not recommend it, because ozone needs an enclosed space. Open under-house areas should be washed, cleared of wet items and dried by sun and wind. The team will assess the rooms that can be closed.

Can people and animals stay in the house during treatment?

Not in the treated area. It must be empty; people, pets and plants leave and return only after the rest and ventilation period.

Can ozone replace washing the house?

No. Mud removal, washing and drying come first. Ozone is the final step for remaining germs and odours.

Is flood-soaked rice safe to eat after ozone?

No. Rice, food and animal feed that sat in floodwater or grew mold should be thrown away, treated or not.

How long does it take?

About 30 minutes per zone, not counting preparation and ventilation. The team gives a total time in advance.

Bring Your Family's Nong Chok Home Back to Fresh, Safe Air

Washed and dried, but the bedrooms still smell musty, or you are worried about elders and children? Let WHD plan ozone disinfection of the closed rooms in your Nong Chok home.

See the Ozone Disinfection Service and Get a Quote

Call 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com

Related Links

• Residential and building ozone disinfection
• Disinfection services
• Chemgene medical-grade disinfectant
• Contact us

References

• Bangkokbiznews: DDPM flood situation report
• Thai PBS: 2026 flood situation
• 2026 Bangkok floods (Wikipedia)
• CDC: Floods
• WHO fact sheets