Important note: This article is general information about caring for the environment at home and at school. It is not medical advice. Inhalers, controller medicines and each child's asthma action plan must follow the guidance of their pediatrician or treating doctor. If a child is struggling to breathe, has blue lips, cannot finish a sentence, or the reliever inhaler is not helping, go to a hospital immediately.

A Story from the Field: The 2 a.m. Cough

Mind is thirty-four. Her son, whom the family calls Khao Pan, is four years old and in his first year at a small private kindergarten near their home. The family lives in a two-story townhouse in a housing estate not far from the Chao Phraya River in Mueang Pathum Thani. Khao Pan was diagnosed with asthma when he was two. His doctor prescribed a daily controller inhaler and a reliever inhaler for flare-ups, and gave the family a written asthma action plan, which Mind keeps taped to the side of the fridge where everyone can see it.

During the 2026 floods, water came into the house to roughly mid-shin height. The family moved to Grandma's house in Sam Khok district for almost two weeks. Khao Pan's kindergarten closed too, because water had entered the ground-floor classrooms and the nap room.

On the first day back to check the house, Mind opened the front door and was hit straight away by a musty smell mixed with the earthy odor of mud. The fabric sofa in the living room was stained with a tide line. A long band of black mold spots ran along the bottom of the walls, tracing exactly how high the water had risen. The foam play mat where Khao Pan usually built his block towers had soaked up water and smelled sour. She took her son inside for just one hour so he could choose which toys to rescue. That night he coughed so hard and so often that he woke at two in the morning, and Mind had to use the reliever inhaler following the steps in the action plan.

Two days later, a message arrived in the parents' LINE group: the kindergarten would reopen the following week. Mind suddenly had two questions at once. First, what did she need to do to the house before her son could sleep there again? Second, were the classrooms that had been underwater really ready for a child with asthma, and how could she ask the teachers about it without sounding as if she was accusing them of something?

Mind's situation is common. Across Mueang Pathum Thani, Sam Khok, Lat Lum Kaeo and the river communities further downstream, many parents of children with asthma or allergies are trying to work out the same two things: how to make home safe again, and how to work with the school so that the classroom does not undo all the effort.

Why Children with Asthma Are So Sensitive to Homes and Classrooms After a Flood

• Mold spores. Mold can begin growing within a few days on damp walls, carpets, cushions and furniture. Airborne spores are one of the most common asthma triggers.
• Dust from dried mud. Once mud dries and is swept or walked on, it breaks down into fine dust that hangs in the air for a long time.
• Harsh chemical smells. Strong bleach, toilet cleaners and fresh paint can make some children cough or feel tightness in the chest.
• Dust mites in damp bedding and rugs. High humidity lets dust mites multiply in mattresses, pillows, stuffed toys and carpets.
• Small children breathe faster and live close to the floor. They crawl, sit and play on the floor, so they meet the dust and spores that settle there far more than adults do.

A kindergarten classroom stacks these same triggers on top of one another: nap mats, a carpet for circle time, a corner full of soft toys and puppets, and an air conditioner that may have pulled damp air through its coil for days. That is why parents of children with asthma need to think about both places, not just home.

What Families Risk If They Rush Back Without Preparing

Health. A child may develop a night-time cough, wheeze, or need the reliever inhaler more often. Some families end up in the emergency room. Floodwater also carries germs from drains and sewage into the house, raising the risk of diarrhea and skin infections. Adults who wade through water to clean should watch for leptospirosis; a high fever with aching calf muscles after floodwater contact is a reason to see a doctor quickly.

Learning and friendships. A child who keeps getting sick misses school, misses activities with friends and finds it harder to settle back into the classroom routine after the long flood break.

Parents' work. Taking leave again and again for doctor visits while also restoring a house is exhausting. Stress builds up, and it is easy to make rushed decisions about cleaning that make things worse.

Money. Medical bills, travel costs and buying new mattresses, rugs or toys more than once if the house stays damp and mold keeps returning.

Common Approaches That Do Not Suit a Home with a Child Who Has Asthma

1. Bringing the child along to help or letting them stay in the house during clean-up. Mud dust and spores are at their worst while surfaces are being scrubbed. Children should be somewhere else.
2. Using strong bleach in a closed room. Sharp fumes linger and can trigger symptoms. If you need to use it, dilute it according to the label, ventilate well and keep the child out of the house.
3. Pointing a fan at a moldy wall. Air helps surfaces dry, but it also blows spores all over the house.
4. Using air freshener sprays, incense or scented candles to cover the smell. Strong fragrance and smoke are triggers for many children with asthma.
5. Painting over walls that are still damp. Mold grows back under the paint, and the smell of fresh paint becomes another burden for a child's lungs for days.
6. Keeping flood-soaked stuffed toys and play mats out of sentiment. Soft items that were underwater are very hard to clean all the way through. If they still smell after washing, they should go.

The Home Solution: Disinfection Fogging and Ozone Treatment on a Day the Child Is Away

World Health Disinfection (WHD) restores flood-affected homes with two complementary steps.

1. Disinfection fogging with CHEMGENE HLD4H through an ultra-low-volume (ULV) fogger. The fine droplets reach along the base of walls, under sofas and beds, around table legs and into the corners of the bathroom, helping to reduce germs on surfaces that were touched by floodwater.

2. Ozone treatment fills a closed room with ozone gas, which helps destroy mold spores floating in the air and resting on surfaces, and breaks down the odor molecules soaked into curtains, cushions and furniture.

A Work Sequence for Homes with a Child Who Has Asthma

1. Book a day when the child is staying elsewhere. Children, older relatives, pets and plants must be out of the house for the whole of the fogging, the ozone treatment and the ventilation period.
2. Site survey. The team checks the flood line, visible mold, hidden damp spots behind cupboards and under stairs, room sizes and air conditioners, so that disinfectant and ozone are dosed correctly.
3. Mud removal and sorting. The team advises what should be discarded, such as foam play mats, stuffed toys and sponge cushions, and what can be kept. An electrician should check any outlets and plugs that were underwater.
4. Disinfection fogging across the ground floor, bathroom, kitchen and the child's bedroom.
5. Ozone treatment with rooms closed and the dose controlled to room size. No people or animals may be inside. Sensitive electronics should be moved out or covered, and some rubber parts may age faster under prolonged high-concentration ozone.
6. Ventilation. Doors, windows and fans are opened until the ozone breaks back down into oxygen, before the child returns.
7. Re-check. The team assesses any remaining odor and damp spots and gives advice on ongoing care.

For mattresses, pillows and sofas that are worth keeping, the family can add a dust mite removal service to tackle another important group of triggers at the same time.

The School Side: Polite Questions Parents Can Ask the Teacher

Mind did not want to find fault with the kindergarten. She simply wanted information so she could plan for her son. Asking in a cooperative tone usually gets better answers. Here are questions that work well:

• Have the classrooms and nap room that flooded been cleared of mud, dried out and disinfected?
• How have the nap mats, the circle-time carpet and the soft toys been cleaned or replaced?
• Have the classroom air conditioners been cleaned since the flood?
• Was any painting done, or were any strong-smelling chemicals used, before reopening? How long have the rooms been aired out?
• May my child bring his own nap mat from home for the first few weeks?
• Does the class teacher have a copy of my child's asthma action plan, and does she know where his reliever inhaler is kept?

Many teachers will be relieved that a parent raised these questions calmly, because they are under pressure too. If the school is still planning its building recovery, parents can suggest professional disinfection fogging and ozone treatment. WHD has experience working in schools and childcare settings, and schedules the work for days when no children or staff are in the building.

Mind's Seven-Day Plan

• Days 1 and 2: Adults in gloves, boots and masks wash out the mud and remove the damaged play mat, stuffed toys and fabric sofa. Khao Pan stays at Grandma's.
• Day 3: An electrician checks the ground-floor outlets. An air-conditioning technician cleans the unit in the child's bedroom. Windows are opened to let in sun and air.
• Day 4: The WHD team carries out disinfection fogging and ozone treatment, then the house is ventilated for the time the team specifies.
• Day 5: Sheets, pillowcases and curtains are washed in hot water where the fabric allows. The child's bedroom is cleared of clutter that collects dust.
• Day 6: Mind goes back into the house alone first. Only when there is no musty or harsh chemical smell does she bring Khao Pan home for a daytime visit.
• Day 7: Khao Pan sleeps at home for the first night. Mind keeps a simple log of any coughing and brings it to the next doctor's appointment.

Every home is different and the timeline can stretch depending on damage, but the core idea stays the same: the child is not present when dust and spores are at their worst, and comes back only once the house is dry, clean and fully ventilated.

Setting Up the Child's Bedroom for the First Weeks Back

The bedroom is where a young child spends ten or more hours every day, so it deserves special attention once the main restoration is done. Mind kept the room deliberately simple for the first month. She moved the bed a hand's width away from the outer wall, which had been damp, so air could circulate behind it. She replaced the old cotton-filled pillow with a new one and used a fresh mattress protector. Shelves of picture books stayed, but the basket of soft toys was reduced to two favorites that had never touched the water and could be washed weekly.

She also stopped using the scented plug-in freshener that had been in the room before the flood, and asked the family not to burn incense near the stairs. Instead of masking smells, she relied on airing the room every morning, and she wiped windowsills and the bedside table with a damp cloth rather than a dry duster, so that dust was collected rather than stirred up. When the weather was very humid, she ran the air conditioner on a dry setting for a while in the evening, after confirming the unit had been cleaned. None of these steps replaces medical treatment, but together they reduce the number of triggers a child meets at night, which is often when asthma symptoms show up first.

Watching for Warning Signs in the First Two Weeks

Returning home and returning to school in the same fortnight is a big change for a small child. Parents can help by paying close attention and writing down what they see. A short daily note is enough: Did the child cough at night? Did they need the reliever inhaler? Did they seem more tired or breathless after school than usual? Were there new rashes or tummy upsets? Patterns are easier to see on paper than in memory, and doctors find a written log much more useful than a general impression.

If the cough is clearly worse on school days than at weekends, that may point to something in the classroom, and it is worth raising gently with the teacher. If it is worse at night at home, the bedroom may need another look for hidden damp. In either case, follow the asthma action plan and speak to the doctor about any change in symptoms. Seek emergency care straight away if breathing becomes very difficult, if the lips look blue, or if the reliever inhaler does not help.

Why Pathum Thani Homes Need Extra Care After Floodwater Recedes

Many housing estates in Mueang Pathum Thani sit on low, flat land close to the Chao Phraya River and a web of canals. Even after water leaves the street, the ground beneath townhouses can stay saturated for weeks, and moisture keeps wicking up into the base of walls and floor tiles. Townhouses also tend to have long, narrow layouts with windows only at the front and back, which makes cross-ventilation harder. The result is that a ground floor can look dry on the surface while the lower part of the walls, the space under the staircase and the inside of built-in cabinets remain damp. These hidden areas are exactly where mold likes to grow and where musty smells come from.

This is why the site survey matters. A trained team looks behind furniture, inside cupboards and under the stairs, not just at the obvious stains. For a family with a child who has asthma, finding and dealing with those hidden damp spots is often the difference between a house that smells fine on the first day and one that stays healthy over the following months.

Checklist Before Bringing Your Child Home

• Walls and floors are completely dry, with no musty smell when you walk in from outside.
• Flood-soaked play mats, stuffed toys and sponge cushions have been discarded.
• Disinfection fogging and ozone treatment are complete, and the house has been ventilated for the time the team advised.
• The air conditioner in the child's bedroom has been cleaned and its filter is clean.
• There is no lingering smell of paint or harsh cleaning products.
• Sheets, pillowcases and curtains are washed and fully dry.
• The child's inhalers are within their expiry date and were not stored anywhere that flooded.
• The latest asthma action plan is posted at home and a copy has been given to the class teacher.

10 Reasons Parents of Children with Asthma in Pathum Thani Choose WHD

1. Work days are scheduled around the days the child is staying elsewhere.
2. Disinfection fogging with a fine mist that reaches wall edges, under furniture and damp corners.
3. Uses CHEMGENE HLD4H, a disinfectant WHD supplies and uses in its own work.
4. Ozone treatment helps reduce mold spores and musty odor without relying on perfume.
5. Ozone dose is controlled to room size, with guidance on protecting electronics.
6. A clear ventilation step before children come back into the house.
7. Practical advice on sorting toys, fabrics and absorbent materials.
8. Dust mite removal for mattresses and sofas can be added in the same visit.
9. Experience restoring both family homes and education facilities.
10. Easy to reach by phone or LINE @whd268.

Before and After: Khao Pan's Family Townhouse

Customer Voice (Illustrative Scenario)

"What reassured me was that the team asked first where my son would be during the work, and told me clearly how long to air the house afterward. I went back in alone first, and only brought him home once there was no musty smell. We are still following up on his medicine and symptoms with the doctor as usual."

Mind, mother of a kindergarten-age child with asthma, Mueang Pathum Thani (an illustrative scenario).

Frequently Asked Questions

Q: My child has asthma. Can they stay at home during disinfection fogging or ozone treatment?
A: No. All children, and especially those with asthma, must be out of the house for the whole of the fogging, the ozone treatment and the ventilation period. The team will tell you when it is safe to go back in.

Q: Does ozone treatment cure asthma?
A: No. Ozone treatment manages the environment by reducing mold spores and musty odor in a room. It is not a treatment for any disease. Asthma control must follow your doctor's advice.

Q: How many days after the water goes down should we wait before bringing our child home?
A: There is no fixed number. Check whether the house is completely dry, cleaned, disinfected and fully ventilated. If you still notice a musty or harsh smell when you walk in, wait longer.

Q: My child's favorite stuffed toy was underwater. Can we wash it and keep it?
A: Soft toys that were in floodwater are very hard to clean all the way through to the filling. If, after washing in hot water where the material allows and drying completely, it still smells or is stained, it is safer to let it go.

Q: The kindergarten says it has been cleaned. What else should parents do?
A: Give the teacher the asthma action plan and tell them where the reliever inhaler is kept, ask about nap mats and air conditioners, and watch your child closely in the first week back. If symptoms get worse, talk to the doctor.

Q: Can we just use an air purifier instead of ozone treatment?
A: An air purifier filters dust and spores from the air while it is running and is useful for ongoing care after restoration. It does not deal with mold and odor embedded in surfaces, so it works best once the house has been cleaned and treated.

Get Home Ready So Your Child Can Breathe Easy Again

Book a survey of your flood-affected home in Mueang Pathum Thani or nearby, scheduled for a day when your child is staying elsewhere.

Book Ozone Treatment, Click Here

See Disinfection Service, Click Here

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

Related Links

• Residential ozone disinfection
• Dust mite removal service
• Master Ozone Generator
• All articles
• External sources: WHO: Floods and health and Department of Disease Control, Thailand