If you have a basement and you do not like to go down there often due to the damp and foul atmosphere, then the time has come to renovate it. The air flow in the basement is very less and this leads to stagnant and foul air. There may be moisture ingress through your walls and the floor. If you have a cemented floor, you might notice some water condensed on the surface. This is more visible on the painted walls where the paint chips off at the point of moisture deposits. Often mold growth occurs at the places of water deposit and this makes the inner air quite unhealthy.
Consult a good engineer and decide on the waterproofing solutions they have. You can install a pump to drain out the excess deposited water. You may install an engineered subfloor that is highly resistant to humidity. A basement dehumidifier is a great option to have in your basement. This will not only dry up the air inside your basement but will also circulate filtered air and keep your basement dry and sanitized. Also make sure the drainage system you have in place is adequate to even survive heavy rains and also floods.
It is always good to be in tune with the natural environment and allow fresh natural air inside your basement. If you do not have a basement window, do consider having one. And if you do have a basement window but keep it closed to keep out dirt and pollution, you can fit in new window enclosures that not only keeps out dust and pollution but some are also designed to reflect in some sun light into your basement! Go ahead, renovate your basement. It is the place for a quick retreat after a hard day’s work.