When mold, bacteria, biofilm, and other biological growths decay, they emit mVOCs — the gases we identify as old house smell. We associate the smell of mVOCs with older homes since older buildings are often more likely to have decaying biological growths.
A weird smell in a house can come from numerous sources, including appliances, furniture, carpets, fabrics or issues like mold or mildew. Occasionally, odors may be caused by sewer gas, natural gas leaks or animals that have died between walls, in attics or under decks.
And then, you can describe the smell in the old house using adjectives like damp, dank, musky, or stale, which generally describe an aged environment.
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.
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.
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.
It's often described as musty and earthy, and may even smell like rotting vegetables or plants. 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.
“Good vintage smells a wee bit musty, but more like a whiff of wool or your grandmother's attic,” Ms.
Vinegar, baking soda, and hot water should be sufficient to get the job done, but you can also choose to make a bleach solution. To do it, mix one cup of powdered bleach with one cup of warm water in a bucket and use that as your scrubbing solution.
“One of the best methods to tell if your home stinks is to leave it. Go away for a day or two, or even a week,” says Bryan Stoddard, handyman and interior designer. “Close all windows and doors, shut the blinds, and seal the place up air-tight.
Neutralize the Air
If you are on a budget, musty smells can be absorbed by setting out an open container or baking soda, white vinegar, even cat litter. Heck, even dryer sheets placed in built-in cabinets and closets can help.
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.
Absorb bad smells with baking soda.
A few bowls of baking soda scattered around the house and replaced weekly. “This is especially helpful in the pantry and in a small kitchen,” she says. “Baking soda does a wonderful job of absorbing, not masking, odors — plus, it's easy to find and cheap!”
Mold and mildew are the most common causes of an old house smell (and one of the most common hazards of an old house). It creates that readily identifiable musty, mildewy smell.
What did the Sixties smell like? No, the answer is not "hippies." For those who grew up in the era, the decade was a bouquet of fresh grass, new plastic, Ipana toothpaste, orange sherbet and meatloaf.
If you see grey, black, green, or bluish specks along grout lines, on walls, or other surfaces, it is most likely mold. Keep an eye out for pink, red, or brown streaks, as well. The texture of mold can be powdery, fuzzy, or slimy. Dark water stains on walls, floors, or ceilings usually indicate the presence of mold.
Black mold is a fungus that may cause your immune system to react. Common symptoms include sneezing, coughing, congestion and eye irritation. It rarely causes serious illness or death but may worsen asthma symptoms.
Most people describe the smell of mold as musty, stale, and earthy — somewhat similar the odor of wet socks or decaying wood. Although mold smells can vary, here are some of the most common characteristics: Musty and Stale — like old socks or a stuffy attic that hasn't been aired out in months.
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.
If your room smells musty, it could be caused by something called microbial volatile organic compounds (mVOCs). The Environmental Protection Agency says, “because mVOCs often have strong or unpleasant odors, they can be the source of the “moldy odor” or musty smell frequently associated with mold growth.
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.
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.
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.