Dry the place out
Open up the windows and air out the house.
If your house tends to be humid, keep the air conditioner or dehumidifier running.
If you have a leaky faucet, fix it. It may be leaking under the sink

Let the sunshine in
Sunlight has and ultraviolet component and is a good disinfectant.
Letting a little more light into an old house can do wonders for a musty order and can
help protect against mildew and mold.

Clean your couch
If that old house smell is coming from your couch, it may be more of an “old couch
smell”. All upholstered furniture and carpets absorb moisture, which can lead to mold
If you work hard to reduce the humidity in your house, over time, the soft stuff may
relinquish some of its ambient moisture and dry out. But it takes time.
Having furniture and carpets professionally deep-cleaned with a disinfectant may
be another option.

Deep-clean the guts of your house
Furnaces and air ducts can have a tremendous amount of mold that can grow in them
when not being used. Air conditioners can also trap mildew and mold in their filtering

Declutter under your sink
Leaks under a sink can definitely cause an unpleasant smell.
Cleaning supplies, beauty products and wet sponges can also cause orders.

Wash your walls
Musty smells can come from the walls.
Washing the walls may help, using ½ cup borax dissolved in a bucket of hot water
(32 ounces), add 2 cups distilled white vinegar and 16 ounces of hydrogen peroxide.
wipe down the wall after washing and air-dry.
Washing the walls with this mixture may also remove grease, dust and mildew.

Neutralize the air
An open container of baking soda or white vinegar placed on top of your kitchen
cupboards can help absorb unpleasant orders