An olfactory hallucination (phantosmia) makes you detect smells that aren't really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils.
Bottom line: If you can't actually see mold, it's almost never a problem. The musty smell you ask about doesn't necessarily mean there are mold spores present, but can simply indicate you need more ventilation with fresh air.
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.
Phantosmia is a condition that causes you to detect smells that aren't actually in your environment. It can happen in one nostril or both — and the odors may be foul or pleasant. Common causes include colds, allergies, nasal polyps and dental issues.
The musty or mouldy smell is a sign that something is not right in your home. Mouldy and musty smells are similar in nature and both are caused by the presence of mould or mildew. Mould and mildew are both fungi and grow in the presence of moisture, or water.
Locate the Source of the Musty Smell
Check for mildew growth in the shower, on the shower curtain, and leaks around sinks, tubs, and toilets. In the kitchen, look for leaks around the sink and dishwasher. Check under and in the refrigerator and small appliances that use water, like coffee makers and tea kettles.
When a cancer starts specifically in the nerves that affect your sense of smell, it is known as olfactory neuroblastoma.
Phantom Smell
Phantosmia, which is an olfactory hallucination, sometimes occurs with anxiety. It can cause you to smell something that isn't there, or rather, a neutral smell becomes unpleasant.
Several conditions may cause a bad smell in the nose, including sinusitis, tooth/ mouth infections, dry mouth, some medications, some foods/drinks, and olfactory damage. Typically, a bad smell in the nose is not life-threatening but can decrease the quality of life.
Moisture and humidity can lead to the growth of mildew and mold, which create an unpleasant smell and, in the case of mold, can cause health risks. Tips for preventing mildew and mold include fixing plumbing problems right away, running a dehumidifier, and making sure wet items are cleaned up.
If you don't see signs of mold, but you can smell it, it may be hidden in your walls. A musty smell indicates that mold is growing in your home. The smell of mold feels earthy, like rotting leaves or decaying wood in a dense, damp forest.
Odor absorbers like baking soda, charcoal briquettes, and even cat litter can abate mold smell and prevent new smells from taking over your home. Fill containers with the odor absorber of your choice, and place them in the rooms where mold is most likely to accrue. Be sure to change these out monthly.
More than 10% (n = 112) of people who had lost consciousness from a head injury reported phantom odors compared with 5.7% (n = 422) of those without a history of head injury.
Non-neuronal expression of SARS-CoV-2 entry genes in the olfactory system suggests mechanisms underlying COVID-19-associated anosmia. Altered olfactory function is a common symptom of COVID-19, but its etiology is unknown.
Other neurological and mental health conditions may cause phantom smells, including depression, migraine, brain injury, schizophrenia, and epileptic seizures.
Experiencing non-existent foul smells and odours could be sign of cancer growing in the olfactory cortex or invading it from neighbouring tissues. These phantom smells are often accompanied with nausea and dizziness.
The smells vary from person to person but are usually unpleasant, such as burnt toast, metallic, or chemical smells. Problems with the nose, such as sinusitis, or conditions of the nervous system or brain, including migraine, stroke, or schizophrenia can cause phantosmia.
Dust and grime build up
If you cannot find any sources of mold in your home then the source may be a little less sinister. 'Musty smells are often caused in the home by a build-up of dirt and grime, which can cause a lingering, unpleasant smell,' explains Amanda Lewis of Elbow Grease.
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.
Molds can grow on plant materials as well, but are also commonly found on building materials like walls and flooring and most home contents (books, cardboard, clothing, etc.). The primary difference between moldy and musty odors is in the strength of the smell; musty odors are usually not as strong as moldy odors.