A Story From the Field: The Morning the Clinic Smelled Wrong

Dr. Pimchanok runs a mid-sized aesthetic clinic in a three-storey shophouse on one of the main roads through Bang Sao Thong. She opened almost five years ago, and the business has grown steadily on the back of loyal clients: factory supervisors from the nearby industrial estates who drop in for laser sessions after their shifts, young office workers from the new housing developments, and mothers who book a facial while their children are at tutoring classes down the street. The ground floor holds the reception desk and a waiting lounge with a soft grey sofa. The second floor has three procedure rooms. The third floor is a quiet recovery room where clients rest with cold compresses after more involved treatments.

When the heavy rain kept falling for days on end, water from the canals and the overloaded drains spilled into the street and then into the ground floor. It stood almost knee-deep for five days. The team managed to carry most of the equipment upstairs before the water rose, but not everything. The waiting-room sofa, the carpet in front of reception, a cabinet full of folded towels and several cartons of consumables were left underwater.

On the first morning the water dropped low enough to walk in, Dr. Pimchanok unlocked the glass door and stopped. The smell was something she had never associated with her own clinic: a mixture of river mud, sewer gas and damp cardboard, heavy and sour, drifting all the way up the stairwell to the second floor. Her staff got to work immediately. They shovelled out the mud, scrubbed the floor tiles with bleach, opened every window, switched on every fan, and sprayed floral air freshener until the lobby smelled like a perfume counter.

Three days later, one of the nursing assistants came to her with her phone. She had photographed the lower corner of the second procedure room, where a cluster of small black dots had appeared on the paint just above the skirting board. Up on the third floor, which the water had never reached, the recovery room had developed a stale, closed-in smell that seemed to come from the air-conditioning. Then a regular client called to book her monthly laser session and asked, very politely, "The clinic was flooded, wasn't it? Is it safe to come in?"

That single question told Dr. Pimchanok everything she needed to know. Bleach and air freshener had made the clinic look better and smell different, but they had not given her an honest answer to give her clients. She needed a process she could explain with confidence.

Why Beauty Clinics Face Higher Risks After a Flood

An aesthetic clinic is not an ordinary shop. Many of its services leave skin temporarily open, thinned or sensitised. Laser resurfacing, extractions, injections, micro-needling, thread lifts and chemical exfoliation all create a window of time when the skin barrier is not at full strength. That makes the clinic environment matter far more than it would in, say, a clothing store. After a flood, the risks fall into several connected categories.

1. Germs carried in by floodwater

Urban floodwater is rarely just rainwater. As it moves through streets, drains and sewers, it picks up household wastewater, animal waste and everything that sits in the gutters. It can carry bacteria such as E. coli and the organisms that cause leptospirosis, which Thai people know as "rat urine disease." When the water recedes, it leaves behind a film of contaminated mud on floors, in tile grout, around the legs of treatment beds, under cabinets and along the bottom of walls. Much of that residue is invisible once the obvious mud has been mopped away, which is exactly why it is dangerous.

2. Mold spores in the air

Gypsum board, ceiling panels, carpet, upholstery, cardboard and even the backing of vinyl wallpaper soak up water like a sponge. In a warm, humid climate like Samut Prakan, mold can begin to grow on these materials within a few days. As colonies mature, they release spores into the air. Those spores travel on air currents, up stairwells and through air-conditioning systems, which is why a recovery room on the third floor can smell musty even when the flood stopped at knee height on the ground floor. In a closed, air-conditioned recovery room, spores can circulate continuously for hours while a client lies there with her eyes closed.

3. Post-procedure skin is more vulnerable

Skin that has just been lasered, injected or exfoliated is more prone to irritation, rashes and skin infections if the surroundings are not clean. Clients who have a reaction after a treatment rarely blame the weather. They blame the clinic. Even a minor breakout or redness that would normally pass unnoticed can become a complaint if the client remembers a musty smell in the room.

4. Clients and staff with allergies or asthma

Mold spores and the volatile compounds behind musty odors can trigger sneezing, a blocked nose, itchy eyes, coughing and, for people with asthma, tightness in the chest. In a clinic, the people most likely to notice are the staff, who spend eight or more hours a day inside, and the regular clients who come often enough to sense that something has changed.

5. Reputation and revenue

Aesthetic clinics live and die by reviews, social media posts and word of mouth. A single comment that says "the clinic smelled damp" or a photo of a moldy corner can push a new client to book somewhere else and make a loyal client hesitate. Every day the clinic stays closed is lost revenue, and every day it opens without real confidence carries a different kind of cost. For clinics that operate as licensed healthcare facilities, cleanliness in procedure rooms is also a matter of professional standards, not just image. Recovery after a flood therefore needs to be systematic from the very first day.

Why the Usual Quick Fixes Are Not Enough

Most clinic owners react exactly as Dr. Pimchanok's team did, and those first steps are not wrong. Removing mud and drying the building are essential. The problem is that each familiar fix has a gap, and those gaps are where germs, spores and odors survive.

• Bleach on its own. Bleach cleans the hard surfaces you can reach with a mop or a cloth. It does nothing for the air, the inside of air-conditioning units, the space above a suspended ceiling or the narrow gap behind a fixed cabinet. Its sharp chlorine smell also lingers, and that is the last thing a client wants to breathe while resting after a treatment. Bleach can also discolour fabrics and damage some upholstery and bed coverings.
• Fans and air-conditioning. Moving air speeds up drying, which is good, but it also spreads mold spores from one room to the next. Running the air-conditioning in a building that is still damp can draw spores into the coils and filters, where they settle and keep releasing a musty smell for weeks.
• Air fresheners, diffusers and scented candles. These cover odors for an hour or two. They do not remove the source. Worse, a floral scent layered over a musty smell often creates an odd, heavy combination that clients notice immediately.
• Painting over the stains. A fresh coat of paint on a damp wall looks perfect for a week or two. Then the paint bubbles, the black spots bleed through, and you have paid for the job twice.
• Mixing cleaning products. Under pressure, staff sometimes combine different cleaners in the hope of making them stronger. Some combinations release harmful fumes, and some can damage the finish on treatment beds, cabinets and flooring.

The lesson is simple. Cleaning removes dirt. Disinfection kills germs on surfaces. Ozone treatment reaches the air and breaks down odor molecules. A clinic recovering from a flood usually needs all three, in the right order.

The Solution: Chemgene HLD4H Fogging Plus Professional Ozone Treatment From WHD

World Health Disinfection uses two techniques that complement each other. The first is a professional disinfection service using Chemgene HLD4H disinfectant, applied with ULV (ultra-low volume) fogging equipment. ULV fogging turns the disinfectant into an extremely fine mist that drifts into every corner of a room: across floors and walls, under treatment beds, into the gaps behind cabinets and onto surfaces that no cloth could reach. Because the droplets are so fine, coverage is even without soaking the room.

The second technique is a professional ozone treatment service. Ozone is a gas, so it spreads through the whole volume of a sealed room, including the air itself, the fibres of curtains and upholstery, and the space above ceiling panels. It helps destroy airborne mold spores and breaks down the molecules responsible for musty, muddy and sewer-like smells, rather than covering them up. Once the treatment ends and the room is ventilated, ozone naturally reverts to ordinary oxygen.

How WHD works in an aesthetic clinic, step by step

1. Site survey. The team walks every floor with you, notes how high the water rose and for how long, identifies visible mold, checks the air-conditioning system and lists any equipment that must be removed or covered.
2. Mud removal and clean-up advice. Before any disinfection, materials that sat underwater for days, such as carpet, sofa foam and cardboard, should be removed, and heavy mud should be cleared. Disinfectant works best on surfaces that are already physically clean, so the team explains what to throw away, what to dry and what can be saved.
3. Room preparation and equipment protection. Laser systems, radiofrequency devices, computers and other sensitive electronics are moved out or covered securely. Opened skincare products and consumables are stored away, and medicines are kept in closed cabinets or removed from the area.
4. ULV disinfection fogging. Chemgene HLD4H is fogged throughout the procedure rooms, recovery room, waiting lounge, bathrooms, stairwell and corridors.
5. Ozone shock treatment. Each area is sealed and an ozone generator is run for a period matched to the room size. The dose and duration are controlled so the treatment is effective without being longer than necessary, which also limits any effect on rubber seals, plastics and electronics.
6. Ventilation. When the treatment is complete, doors and windows are opened and ventilation fans are used until the ozone has dissipated. Nobody re-enters until the space has been aired out properly.
7. Re-check and aftercare advice. The team checks the rooms again for odor and condition and gives practical advice on humidity control, air-conditioning cleaning and daily disinfection routines.

10 Reasons Bang Sao Thong Clinics Choose WHD After a Flood

1. Complete coverage. ULV fogging reaches under treatment beds, behind cabinets and along skirting boards where mops simply cannot go.
2. A disinfectant suited to client-facing spaces. Chemgene HLD4H does not leave the harsh, lingering smell of chlorine in rooms where clients rest.
3. Odor removed at the source. Ozone treatment breaks down odor molecules instead of masking them with fragrance.
4. Fewer airborne spores in the recovery room. The room where clients lie still with their eyes closed gets the attention it deserves.
5. Protection for expensive equipment. The team plans in advance which devices to move or cover, so your lasers stay safe.
6. Flexible scheduling. Work can be arranged outside clinic hours to keep downtime as short as possible.
7. Clear aftercare guidance. You receive practical advice on humidity, air-conditioning maintenance and daily wipe-downs.
8. An honest answer for clients. Your front desk can tell clients that the clinic has been professionally disinfected and ozone-treated, and explain what that means.
9. Add-on services when needed. Combine the job with a dust mite removal service for recovery beds, cushions and sofas, or a mosquito spraying service for the area around the building.
10. A team that respects healthcare spaces. WHD works step by step, with safety and cleanliness as the priority throughout.

Before and After

In the Client's Words

"At first I thought scrubbing the floor and spraying something nice would be enough, but the musty smell simply would not leave. When the WHD team came in, fogged the clinic and ran the ozone treatment, and explained how to cover the laser machines and how long we needed to air the rooms, I finally felt at ease. On the day we reopened, one of our regular clients walked in and said she could not smell anything at all. That alone made it worth it."

— Owner of an aesthetic clinic in Bang Sao Thong (a scenario based on real field situations)

A Practical Recovery Timeline for Your Clinic

Every building is different, but most aesthetic clinics recovering from a flood can follow a sequence like this. Thinking in stages helps you set realistic expectations with your team and your clients.

Days 1 to 2: Safety and removal

Make sure the electricity is safe before anyone enters. Wear boots and gloves. Photograph the damage for insurance. Remove wet carpet, soaked foam cushions, cardboard boxes and any consumables whose packaging was submerged. Shovel and mop out the mud, and start drying the building with open windows and, if possible, dehumidifiers.

Days 2 to 4: Inspection and planning

Book a site survey with WHD. Decide which rooms will be treated first, which equipment needs to be moved and when the clinic can be closed for a treatment window. Check the air-conditioning units and filters, because they often hold more spores than the rooms themselves.

Treatment day: Fogging and ozone

Prepare the rooms, cover or remove sensitive devices and leave the building. The WHD team fogs with Chemgene HLD4H, then seals the rooms for ozone treatment, then ventilates. When the team has re-checked the rooms, staff can return.

Weeks 1 to 3: Drying, repairs and monitoring

Keep dehumidifiers running in procedure and recovery rooms. Have the air-conditioning professionally cleaned. Wait until walls are completely dry before repainting or replacing wallpaper. Check the lower part of every wall weekly, and call the team for a reassessment if new mold spots appear.

Daily Habits That Keep the Clinic Fresh After Treatment

• Run dehumidifiers in procedure and recovery rooms for the first two to three weeks, and aim to keep indoor humidity under control rather than letting it climb back up overnight.
• Replace or hot-wash all bed sheets, towels and pillowcases that were exposed to damp air before using them again.
• Clean air-conditioning filters and schedule a full professional cleaning, since units that pulled in humid air for days often harbour mold.
• Wipe high-touch surfaces such as door handles, counters, armrests and card machines regularly with Chemgene HLD4H spray.
• Keep consumables in sealed containers off the floor, at least until you are sure the building is fully dry.
• Train front-desk staff to explain calmly what was done, so worried clients hear a clear, factual answer.

Frequently Asked Questions

Will ozone treatment damage our laser machines?
The team recommends moving or securely covering laser systems and other sensitive electronics before work begins. WHD uses a controlled ozone dose based on room size and avoids running treatments longer than necessary, which limits any effect on rubber and plastic components.

How soon can we reopen after fogging and ozone treatment?
Once the rooms have been ventilated, the ozone has dissipated and the team has re-checked the space. In many cases clinics can use the area again the same day or the following day, depending on the size of the premises and the conditions on site.

The recovery room was not flooded. Does it still need treatment?
It is strongly recommended. Moisture and mold spores travel up stairwells and through air-conditioning, and closed rooms tend to collect musty odors without anyone noticing until a client mentions it.

What should we do with medicines and consumables during the work?
Keep them in closed cabinets or sealed containers, or remove them from the treatment area if possible. Any items that were submerged or whose packaging was damaged should be assessed and disposed of according to your clinic's own procedures.

If a wall already has mold, is ozone alone enough?
Ozone is very effective at reducing airborne spores and odors, but a wall that is still wet or a material that is breaking down needs to be dealt with at the source by drying, repairing or replacing it, alongside disinfection fogging.

Does WHD serve Bang Sao Thong and nearby areas?
Yes. WHD serves Samut Prakan, Bangkok and the surrounding provinces. Call 065-556-6294 to check availability and book a site survey.

Can we keep using the disinfectant ourselves after the service?
Yes. Many clinics keep Chemgene HLD4H spray at reception and in each room for routine wipe-downs between clients, which helps maintain the result of the professional treatment.

Reopen Your Clinic With Confidence

Let the WHD team restore your procedure rooms, recovery room and waiting lounge so they are clean, disinfected and free of musty odors.

Book Ozone Treatment – Click Here

See Disinfection Service – Click Here

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

Related Services and Reading

• Ozone treatment for odors and chemical residue
• Residential ozone disinfection
• Master Ozone Generator
• All WHD articles
• Health guidance after floods: WHO Floods Fact Sheet and the Thai Department of Disease Control