Last updated: 15 Oct 2026 | 19 Views |
Nong Mind is a Grade 9 student who lives with her mother, Khun Ann, in a two-story townhouse in Bang Kruai district, Nonthaburi. Her study desk sits in a corner of the ground-floor room, right beside a plywood bookshelf holding textbooks for every subject, the exercise books she has filled since the start of term, and a pink notebook she had carefully written as her personal summary for revision before exams. For a fifteen-year-old, that notebook represented weeks of evenings and a great deal of pride.
When the 2026 floods came, the water rose to about knee height inside the house and stayed for nearly ten days. The family managed to carry some things upstairs, but the bottom shelves of the bookcase and the box of notebooks under the desk were completely submerged. On the day they came home, the musty smell reached them at the front door. The textbooks had swollen into waves, their covers had come away, their pages were stuck together, and black spots were creeping along the edges. The pink summary notebook was soaked so thoroughly that its pages had fused into a single block, and the pen ink had bled until it was almost unreadable.
Worse still, end-of-term exams were only a few weeks away. Nong Mind sat in front of the bookshelf and cried. Khun Ann was worried about two things at once: her daughter's studies, and her health. Nong Mind has allergies, and she started sneezing every time she went near her desk.
This guide is written for families in Bang Kruai, Bang Yai, Mueang Nonthaburi, and neighboring areas facing something similar. It helps you sort out which books and notebooks can be saved and which should be let go, shows you how to preserve the important content before it is too late, and explains how to get the study corner clean and odor-free again so your child can sit down and revise with focus. It is practical field advice, not medical advice.
Paper is food for mold. Paper is made from wood pulp, which mold digests readily. Once paper gets wet and sits somewhere damp and still, mold can appear within just a few days, along page edges, down the spine, and between pages that are stuck together. Books are also dense, so the inside of a wet book can stay damp long after the cover feels dry.
Floodwater carries germs into the paper. Water that flowed through drains and over septic tanks carries bacteria such as E. coli and the organisms that cause leptospirosis, known in Thailand as rat urine disease. Paper that soaked in floodwater is not just muddy; it has absorbed those germs into its fibers.
The habits of school-age children. Children turn pages with their fingers and then touch their faces, chew on pens, and read lying down with books close to their noses. Repeated contact with contaminated, moldy paper should not be ignored.
Allergies and studying. Mold spores from books, plywood shelves, and damp walls are released every time a page is turned. Children with allergies may sneeze, get a blocked nose, itchy eyes, or a cough that makes it hard to read for long. If your child has persistent or unusual symptoms, please see a doctor; this article is not medical advice.
Time and stress before exams. Losing notes written over an entire term is upsetting for any student, and the closer exams are, the higher the stress. Parents need to manage priorities carefully: the content their child must learn, and the condition of the room where their child will study every day.
Money. A full set of textbooks, workbooks, and stationery for several subjects is a real expense, arriving at the same moment the family is paying for repairs. Knowing what can genuinely be saved helps avoid both unnecessary spending and unnecessary risk.
1. Photograph every page that is still readable. Wearing gloves and a mask, take the key notebooks and summary books outside. Gently separate pages that are not stuck, and photograph them one by one with a phone. Do not force apart pages that are firmly stuck together; they will tear and you will lose more than you save.
2. Ask classmates and teachers for copies. Photocopy or ask for photos or files of classmates' notes, and ask subject teachers whether they have summary sheets or lesson files your child can download. Most teachers are very understanding after a flood, and classmates are often happy to help.
3. Contact the school about textbooks. Let the homeroom teacher know that the textbooks were damaged in the flood, and ask whether the school has spare copies to lend, or any arrangements to support affected students. Schools in flood-hit areas often have their own approaches, so it is worth asking early.
4. Use online learning resources in the meantime. While waiting for replacement books, a great deal of content for many subjects is available in digital form. That lets your child keep revising without handling moldy paper.
5. Rebuild the summary together. For a student like Nong Mind, rewriting a summary notebook from photos and classmates' notes can actually be a useful revision exercise. Parents can help by organizing the photos by subject and printing the clearest pages.
Once the important content is safely stored digitally, deciding to let go of the physical books becomes much easier, for parents and for the child.
Discard. Notebooks and books that soaked in floodwater until they swelled, whose pages are fused into a block, that have black mold on many pages, or that smell rotten. Books that a child uses every day should not be kept if they were soaked through in floodwater, because it is very hard to get them truly clean and completely dry.
Possibly saveable. Books that were only exposed to humidity, or got wet only along the bottom edge, with no mold or just a few small spots. Dry them in a shady, breezy place. Stand each book upright with the pages fanned open, and slip paper towels or blotting paper between the pages every 20 to 30 pages, changing the paper often. When fully dry, take them outside and brush off any mold spots gently with a soft brush.
Books with sentimental value. Old diaries, photo albums, or keepsake books that are wet but that you have no time to deal with right now can be placed in a plastic bag and put in the freezer temporarily. Freezing slows mold growth and buys time. Afterwards, consult a document conservation specialist or a library for advice.
Never do this. Do not iron wet paper or use a high-heat hair dryer on it. Do not spray perfume or alcohol onto the pages. And do not put books that are still damp back onto shelves in a room that still smells musty.
Photograph the pile of discarded books as a record, then bag them, tie the bags firmly, and take them out of the house.
Plywood shelves become a mold source. A plywood bookshelf that sat in water usually swells, and mold soaks into the board. Put new books on it, and before long they will start to smell musty and show spots of mold.
The walls and floor around the desk are still damp. Plaster walls that stood in water for days keep releasing moisture for a long time. Mold may be growing behind the bookshelf or under the desk where you cannot see it.
Perfume and fans don't fix the cause. Fragrance hides the smell for a while. Fans help things dry, but they also blow mold spores around the room, which makes symptoms worse for children with allergies.
Repainting straight away. If the wall is still wet inside, new paint will blister and mold will come back under it. Let the wall dry and deal with the mold first.
A good study corner starts with a room that is genuinely clean and dry, not just with new books.
World Health Disinfection (WHD) does not rescue or repair books. What we take care of is the room and the study corner your child uses every day: the walls, the floor, the space behind the bookshelf, under the desk, and the air in the room. The aim is that new books and rescued notebooks have a home that will not make them musty, and that your child can study for long stretches without sneezing constantly.
Our disinfection fogging service applies CHEMGENE HLD4H with ULV foggers as a fine mist. It reaches walls, floors, the back of shelving, under desks, and the joint between wall and floor, reducing bacteria, viruses, and mold on surfaces that were under water.
Our ozone treatment service seals the room and releases ozone gas for a time calculated from the room's size. It helps destroy airborne mold spores and breaks down the odor molecules soaked into walls and ceilings, so the musty smell is removed at its source.
Fogging deals with contaminated surfaces; ozone deals with the air and deep-set odor. For a study room where a child needs to concentrate for hours, removing that constant musty background makes a noticeable difference.
Ozone safety: During treatment there must be no people, pets, or plants in the area. Our team controls the dose and duration. Books, important documents, computers, tablets, and other sensitive electronics must be removed or covered beforehand, and the room is always fully ventilated before anyone goes back in.
"At first all I could think about was buying new books fast. But the team showed me that the whole back of the bookshelf was covered in mold, and that new books would just start to smell again. After the room was fogged and ozone-treated, my daughter could sit and study without sneezing like before, and she was ready in time for her exams."
— Khun Ann, Nong Mind's mother, Bang Kruai (an illustrative story based on typical field situations)
A flood disrupts more than the house. Students lose study time, routines, and sometimes confidence. A few practical steps help them get back on track.
Set up a temporary study spot. While the study room is being restored, find a clean, dry, quiet place, perhaps a corner upstairs, a relative's home, or a library, where your child can revise without musty air.
Make a simple plan. List the subjects and topics coming up in exams, mark which notes have been recovered and which still need to be rebuilt from classmates or teachers, and break the work into small daily goals.
Keep the school informed. Teachers can only help if they know what has happened. Many will offer extra materials or guidance to students affected by flooding.
Watch for signs of stress. Losing a term's worth of notes is upsetting. Acknowledge the loss, praise the effort of rebuilding, and keep routines such as regular meals and sleep as steady as you can. If stress seems overwhelming, talking to a school counselor can help.
Celebrate small wins. Rebuilding one subject's summary, or a first full evening of revision in the restored room, is worth recognizing. It helps your child feel that life is returning to normal.
Once the study room is restored, the next question is what to buy, and when. A little planning keeps costs under control and avoids filling a freshly treated room with things that are not needed yet. It also gives you a few weeks to confirm that the walls and floor are staying dry before the shelves are full again, which is the best early warning that mold is not coming back.
Prioritize by exam timetable. Replace the textbooks for the earliest exams first. For subjects that are examined later, digital materials and borrowed copies may be enough for a while.
Ask about borrowing before buying. Older students in the neighborhood, cousins, or the school library may have copies of the same textbooks from previous years. Check that any borrowed book is dry and free of musty smell before it comes into the room.
Buy stationery in small amounts. Notebooks, pens, and folders are easy to restock gradually. Keeping only what is in use reduces clutter and makes the desk easier to clean.
Replace storage, not just contents. If you are buying a new shelf, choose an open design in metal or plastic and keep the bottom shelf off the floor. It is a small investment that protects every book you put on it.
Keep receipts and a list. A simple list of what was lost and what was replaced, with receipts, is useful if your insurance or any assistance program asks for details later.
Q: Can moldy books be ozone-treated?
A: We do not recommend it. Concentrated ozone may degrade paper and ink, and it does not truly clean books that soaked in floodwater. We ask you to remove the books first and then treat the room.
Q: Can a notebook whose pages are stuck into a block be saved?
A: Usually not. We suggest photographing the pages that are still readable, getting copies from classmates, and then discarding the notebook.
Q: What about a book that only got wet along the bottom edge?
A: Dry it in the shade with the pages fanned open and blotting paper slipped between them. Once dry, brush off any mold spots gently outdoors.
Q: When can my child use the room again?
A: After ventilation, once the ozone smell has faded. Our team will tell you when it is appropriate.
Q: How long does the service take?
A: It depends on the room size and on-site conditions. Our team will give you an estimate after the survey.
Q: Do you serve Bang Kruai?
A: Yes. We cover Bang Kruai, Bang Yai, Mueang Nonthaburi, Pak Kret, and nearby areas.
Send us photos of the room, the bookshelf, and the flood-affected walls for an initial assessment. We serve Bang Kruai, Bang Yai, Mueang Nonthaburi, and surrounding areas.
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Call 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com
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