I live in east central Alabama. I have a 1500 sq. ft. basement. Half is a double garage and the other half is a semi finished area with freezer, pantry and open storage. The garage area is separated by insulated plywood walls.This summer has been terribly wet and my entire basement smells musty. There is no visible mildew, mold or water intrusion. My HVAC air handler is located in the semi finished area with one duct outlet for the semi finished area. I have a ceiling fan and a box fan that run all the time in the semi finished part. Do I need some sort of forced ventilation in both areas to pull out the moist air? Other suggestions? Thanks.