Mold has a strong, pungent odor that's enough to make you gag. Mildew has more of a musty smell that can make you wrinkle your nose, but it doesn't invade the senses as much. If the smell is reminiscent of wet, forgotten laundry or a damp basement, then you're likely smelling mildew rather than mold.
Mildew has a milder, musty smell that some compare to damp socks, but mold smells stronger and more pungent. The reason mold has a more powerful odor is that as it grows, it produces microbial volatile organic compounds (MVOCs).
A moldy or musty smell is frequently associated with the growth of mold or mildew. These smells are due to microbial volatile organic compounds (mVOCs) being released into the air. The mVOCs are produced by mold and as it grows, they can produce strong smells alerting you of mold or mildew growth.
Mold and mildew smell stale and pungent, similar to the smell of rotting wood. It's most common smelled in either places where mold spores can colonize undisturbed like basements and closets, or in places where there is plenty of moisture like bathrooms.
The main way to tell the two apart is how strong the odor is that you smell. Musty odors are not as strong as moldy odors. Either way, smelling a musty or moldy order should alert you to the possibility of mold growth.
If left alone, the smells might fade over time, but likely won't completely go away on their own.
If your home has a stale, musty scent, there could be a handful of explanations, including a plumbing leak, high humidity, poor airflow, dirty HVAC equipment, or soiled carpet.
A moldy odor suggests that mold is growing in the building and should be investigated. The health effects of inhaling mVOCs are largely unknown, although exposure to mVOCs has been linked to symptoms such as headaches, nasal irritation, dizziness, fatigue, and nausea.
Use undiluted white vinegar on hard surfaces in kitchens and baths. A bleach solution also works to kill mold. Mix one cup of bleach in a gallon of water, apply to the surface and don't rinse. Mix a 50/50 solution of ammonia and water.
Can mildew make you sick? Like mold, mildew can cause health problems with prolonged exposure. While the fungi themselves are not toxic, certain species produce mycotoxins, which can cause mild to severe symptoms in humans.
Mold generally looks slimy or fuzzy, tends to have a raised texture, and can come in a rainbow of colors, including deep green and black. Mildew is powdery, looks white or gray, always appears flat, and grows on surfaces.
Vinegar and baking soda are usually more than sufficient, and are also a good choice if you have kids or pets. Does a musty smell always mean mildew? Not always. A musty smell can also be indicative of mold, however mold usually smells quite a bit stronger than mildew.
The best way to describe the scent is “musty” or “earthy.” Some individuals even compare it to the smell of sweaty socks.
Exposure to a large number of mold spores may cause allergic symptoms such as watery eyes, runny nose, sneezing, itching, coughing, wheezing, difficulty breathing, headache, and fatigue.
Mildew and mold smells indicate a much larger problem -- mold removal can cost thousands of dollars, plus whatever's letting moisture in will need to be fixed. If you notice a strong smell but are interested in the house, hire an inspector who will pay special attention to unmasking the foul odor.
Q: Can Mildew Make you Sick? A: Yes, mildew can cause health issues such as asthma, allergies, and other respiratory diseases. The mold spores can be found in damp areas like basements, bathrooms, and kitchens. If you find mold growing in these places, it is best to clean them up immediately.
Mold stays “dormant” in the air or on surfaces even when there's no excess moisture to help it grow. If the humidity in a room increases, mold will start growing in patches on walls, clothes, and more. So, to answer your question, dehumidifiers do NOT kill mold, but they do prevent it by reducing humidity.
Cleaning vinegar, which contains 6% acetic acid, is the best type for killing mold. White vinegar containing 5% acidity will also work just fine. If you don't already have some at home, white vinegar can be inexpensively purchased at most grocery stores.
Some people are sensitive to molds. For these people, exposure to molds can lead to symptoms such as stuffy nose, wheezing, and red or itchy eyes, or skin. Some people, such as those with allergies to molds or with asthma, may have more intense reactions.
Try changing the air filters in your home's heating and cooling systems to maximize the airflow and circulation. Stagnant air can be stinky air. Invest in an air purifier, which may help to reduce odor issues by killing the bacteria and fungi in the air.
The distinctive odor of molds usually follows within 48 hours after a flood or other mishap involving an influx of moisture or water. However, it may not always appear right away. The slower-growing molds (like Stachybotrys) often take months to grow and are often difficult to detect initially.
There's a musty smell in your home
When you walk into your home, you want it to smell clean and fresh. Moisture in the air tends to hold and trap odor, Bautista says. A dehumidifier will dry out the air and take away this moldy scent.
You might notice a musty smell, but not be able to see any mold growing. In this case, you should look for areas that might be exposed to water. Mold needs moisture to grow. If you're smelling mold in a usually dry area, you might have water damage or a leaking pipe.
The damp, earthy smell of mold and mildew is due to excessive humidity, especially in stagnant places like the bathroom, basement, or laundry room. When mold and mildew build up, they release foul-smelling gases, which permeate textiles like your carpet, curtains, and upholstery.
The Health Risks of Sleeping in a Room with Mould
If you're sleeping in a room with mould, you could be breathing in mycotoxins (toxic chemicals present in the spores of certain mould types) throughout the night.