What if you can smell mold but not see it?

Author: Miss Freida Wilkinson V  |  Last update: Sunday, April 27, 2025

If you have localized the smell of mould but cannot see any obvious mould infestation, the spores may have spread behind or under the surface. This is because mold likes to "hide" behind wallpaper, paneling, plaster or baseboards as well as under floor coverings such as carpeting.

What to do if you smell mold but can't find it?

Clean surfaces with a mixture of water and white vinegar or baking soda to neutralize odors. Inspect hidden areas like under carpets, behind walls, and inside ducts for any concealed mold. If the smell persists, consider professional mold inspection to identify and address any hidden mold sources.

Can there be mold if you can't see it?

There are many places in the home or office where mold can grow unseen, such as your crawl spaces, basement and attic, above ceiling tiles, inside heating, ventilation and air ducts, inside walls, and under carpet and floorboards.

Can you smell mould without seeing it?

Mold does not have to be visible to be a concern. It may be hidden. Even hidden mold may not be visible. If you smell a musty odor, then you have mold. A weird odor may be musty and/or a combination of deteriorating organic materials and mold growth. Be aware that testing for mold may very well be inconclusive.

Why do I smell mold when there is none?

Phantosmia refers to detecting smells that aren't really there. It's a symptom of many common conditions, including allergies, colds and upper respiratory infections. It could also indicate a brain-related condition, including epilepsy, stroke or Alzheimer's disease.

9 Signs You Have Toxic Mold In Your Home

Why am I randomly smelling mold?

Phantosmia may be caused by a head injury or upper respiratory infection. It also can be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medicines and Parkinson's disease. Phantosmia also can result from a COVID-19 infection.

What are signs of mold sickness?

Although symptoms can vary, the most common symptoms seen in people exposed to mold indoors include:
  • Nasal and sinus congestion.
  • Eye irritation, such as itchy, red, watery eyes.
  • Wheezing and difficulty breathing.
  • Cough.
  • Throat irritation.
  • Skin irritation, such as a rash.
  • Headache.

How to tell if mold is behind walls?

How to Detect Mold in Walls
  1. Water stains.
  2. Dark rings.
  3. Discoloration.
  4. Deterioration like peeling, bubbling, or cracking of the paint or wallpaper.

Is it OK if I smell mold?

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.

Can smell damp but can't see it.?

A strong damp smell is an indicator there's too much moisture in your home. These strong smells come from mould and mildew growing in places you can't see.

How to get rid of unseen mold?

How do I get rid of hidden mold in my house? Find what is causing the mold growth such as moisture problems and fix it. Also, clean up the mold up to its roots by using soap and water or other natural solutions like vinegar, hydrogen peroxide, and baking soda.

Can mold behind walls make you sick?

It irritates the nose and throat, which can lead to both sneezing and coughing as your body tries to get rid of the irritant. Inhaling mold spores can also trigger coughing in people with allergies or an asthma attack, for those with asthma.

How to tell if there's mold in the air?

Your house has a musty odor. Molds emit mVOCs, which have a smell that is frequently referred to as "musty." Even though the physiological effects of mVOCs are not well understood, they have been connected to nausea, migraines, exhaustion, nausea, and sinus inflammation.

What does hidden mold smell like?

Mold, when it flourishes indoors, exudes an odor. Experts liken the smell of mold to a forest lush with earthy vegetation, soil and decaying wood. Others connect the scent of dirt lying beneath decayed leaves with the smell of mold. More homely descriptions suggest mold smells like wet, dirty socks.

How to tell if mold is in the shower?

You See Dark Spots

Black spots are often the first sign of mold or mildew in the bathroom. These black spots may first show up in your tile grout or the caulk around the shower or tub. Take a look at the floor, around the baseboards, and on the ceiling to spot spores in tricky locations.

Will mold smell eventually go away?

Once the mold is discovered and remediated, the odors will likely go away.

Why do I smell mold when there is no mold?

Summary. Why does my apartment smell musty even though there is no visible mold? Musty odors can be caused by hidden sources of moisture such as leaking pipes, condensation or poorly ventilated areas.

How long does it take to get sick from mold exposure?

According to the CDC, people usually experience their first symptoms within 2 to 9 hours of their first exposure. On the other hand, some people could go for weeks or months before feeling sick if their exposure is limited enough. This is why it is also important to check damp, dark areas of your home for mold.

How to find hidden mold in your house?

Most often, a mold problem will be readily identified by a musty smell that becomes obvious in damp environments. Mold also likes to play hide and seek, so if you suspect there is a problem, then check under carpets, behind drywall, inside ductwork, in between bathroom tiles and in other moisture-prone areas.

Can an air purifier help with mold?

Mold is an obvious health risk in any home, but investing in an air purifier can help limit your exposure. The best among them will ideally offer HEPA-level filtration, with this level of filtration being able to trap up to 99.97% of airborne particles down to 0.3 microns in diameter.

Can I test myself for mold exposure?

Urine mycotoxin tests are ideal for testing yourself (and your family members) for mycotoxin exposure. They're absolutely painless, totally non-invasive, and incredibly easy to use.

What happens if you breathe in mold for a long time?

Chronic Fatigue: Mold forces your body to work harder, leading to persistent fatigue, especially in those with pre-existing conditions. Lung Issues: Prolonged exposure can cause lasting damage to lung function.

How to tell if your house is toxic?

If you suspect your asthma worsens or is more severe than usual, contact your doctor or medical professional.
  1. Bad Smells In The Home. When there's a bad smell in the home, you can tell. ...
  2. Peeling Wallpaper. ...
  3. Spots On The Wall. ...
  4. Bad Allergies Won't Go Away. ...
  5. Visible Mold Growth. ...
  6. Past Water Damage.

Are there mold detectors?

The Biomatrix mold monitor is more than the most technologically advanced smart home mold detector on the market. With the purchase of a Biomatrix device, your system will be monitored by a team of specialists, ensuring that your home is scanned for signs of trouble 24/7.

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