The musty smell of mold can be a homeowner’s worst nightmare, especially when you can’t locate the source. Mold can emit a variety of odors, from the earthy smell of damp wood to the unpleasant scent of dirty socks. While the smell is unmistakable, finding the source can sometimes prove difficult.

Signs of Hidden Mold

One of the first places to look for hidden mold is behind peeling wallpaper. Mold thrives on the cellulose found in drywall and wallpaper, making it a perfect breeding ground. If you suspect mold, it’s best to hire a professional to check behind the wallpaper, as DIY efforts can release more spores into your home, leading to further contamination. Once the mold is cleared, using mold-resistant primer and quality adhesives can prevent future issues. It’s also wise to avoid wallpaper in moisture-heavy rooms like bathrooms or kitchens.

AC Units – A Surprising Culprit

Air conditioning units, especially those left unused for extended periods, can also become mold havens. As the unit pulls in dust and pollen from the air, it creates an ideal feeding ground for mold spores. Mold inside AC units can easily spread throughout your home. Experts suggest running your air conditioning regularly to prevent mold buildup, and consulting professionals if you suspect mold has infested the system.

The Lingering Smell of Mold

Even after mold is removed, its odour may persist due to microbial volatile organic compounds (MVOC). These compounds, which mold releases, are responsible for the unpleasant smell. In some cases, MVOCs may linger for a while even after the mold has been dealt with, as they can permeate the surrounding materials. While the smell can be bothersome, it’s the spores themselves, rather than the odour, that pose the real threat to health.

Mold in Different Spaces

Mold thrives in areas that are dark, damp, and rich in nutrients. This means places like attics, basements, crawl spaces, and bathrooms are more susceptible to mold growth. Homeowners should be particularly vigilant in these areas, as mold can cause structural damage by eating away at wood, drywall, and other materials.

Health Risks of Mold Exposure

When mold spores are present, occupants of a home may experience allergic reactions, such as a runny nose, watery eyes, or itchy skin. If these symptoms improve when leaving the house, mold is likely to be the culprit. The health risks are more severe for individuals with pre-existing respiratory conditions, as mold can exacerbate these problems.

Mold Testing and Prevention

If you suspect mold but can’t see it, professional mold testing is available. Homeowners can also purchase mold testing kits from hardware stores. While the smell of mold can guide you, it’s important to act quickly, as mold spreads rapidly. Attic mold, for example, can be avoided by increasing ventilation and promptly addressing roof or window leaks. Annual roof inspections by a professional can help catch potential problems early.

Carpet and Mold

Another hidden spot for mold is under carpets. If carpets become wet during rainstorms or due to spills, mold can take root. Prevent this by keeping windows closed during storms and cleaning spills promptly. Regular vacuuming also helps reduce the chances of mold colonizing your carpet.

Laundry Rooms and Mold

Mold can also grow in washing machines, particularly in the gasket, where moisture tends to linger. Homeowners can prevent this by leaving the washing machine door open after use and wiping away small amounts of mold with a bleach solution.

Mold Inside Walls

Lastly, mold can grow inside walls, especially if there’s a leak in the plumbing. By the time visible signs like discolouration or swelling appear, significant damage may have occurred. Regular inspections and quick repairs of any leaks can prevent this kind of hidden mold from taking hold.

While mold can be elusive, its smell is often the first sign of trouble. By staying vigilant and acting quickly, homeowners can protect both their property and their health. When in doubt, always consult a professional to handle mold removal and ensure the issue is fully resolved.