The short answer
Common Sources of Water Damage Odors
Musty odors often signal hidden moisture or mold growth within walls, under floors, or inside cabinets. Spills from appliances, sewage backups, or floodwater leave behind organic matter that decays and smells. Stagnant water trapped in carpets or padding creates a sour smell that gets stronger over time. Identifying the exact source is the first step to a lasting solution. The type of water involved also influences the odor's severity and the required cleanup methods.
Initial Steps for Homeowners
Start by removing all standing water and wet materials you can safely handle. Increase ventilation by opening windows and using fans, but be careful not to spread mold spores. This is crucial during the first 24 to 48 hours to prevent microbial growth. Clean hard surfaces with a detergent solution. For porous items like upholstery, drying them completely outdoors can help reduce initial odors before further treatment.
- Remove saturated carpets and padding immediately.
- Take out wet boxes, papers, and fabrics for drying or disposal.
- Wipe down non-porous surfaces with a mild cleaning agent.
- Place damp, salvageable items in a well-ventilated, dry area.
- Use fans to circulate air, but avoid blowing air over suspected mold.
When to Call for Professional Help
If the smell persists after your initial cleaning and drying efforts, the moisture source is likely deeper. Widespread odor or visible mold means professional assessment is needed. Local water damage pros have industrial air scrubbers, ozone generators, and hydroxyl machines that neutralize odors at a molecular level, which household products cannot do. They can also identify and treat odors coming from inside wall cavities or under subfloors.
How Professionals Treat Persistent Odors
The pros begin with a detailed inspection to find all moisture and contamination. They use specialized equipment like thermal imaging cameras and moisture meters. After removing any unsalvageable materials, they employ advanced deodorization. This process often includes sealing the area and using equipment that breaks down odor-causing particles in the air and on surfaces. The specific method chosen depends on the materials affected and the type of odor present.
Preventing Odors After Water Damage
Complete drying is the best prevention. Ensure all structural materials and contents are dry to the touch and have normal moisture readings. In any climate, areas with high humidity or hidden cavities need special attention. Address leaks promptly and consider a dehumidifier in naturally damp areas like basements to stop odors before they start.
- Ensure walls and subfloors are completely dry before rebuilding.
- Use a moisture meter to verify drying in hidden spaces.
- Clean and disinfect all affected areas before closing up walls.
- Install proper ventilation in bathrooms, kitchens, and laundry rooms.
- Fix plumbing leaks immediately to prevent recurring moisture issues.
- Store items in plastic bins instead of cardboard in storage areas.
Water damage does not wait
Every hour counts once water gets into floors and walls. One call starts the response.
Call Now (208) 537-2633Frequently asked questions
Will air fresheners get rid of water damage smells?
No, air fresheners only mask odors temporarily. They do not address the source, which is often microbial growth or decaying materials. The smell will return until the moisture and contaminated materials are properly removed and the area is professionally deodorized.
Can I remove sewer smell myself?
It is not safe. Sewage contains harmful bacteria and pathogens. You should avoid the area and call local water damage pros for cleanup. They have the training and protective equipment to safely handle biohazard contamination and eliminate the associated odors.
Does insurance cover odor removal?
Coverage depends on the source of the water and the specifics of your policy. If the water damage itself is a covered peril, related odor remediation is often included. Policies vary, and your insurer decides what is covered.