I would try this in your closets and your sewing space. Get Damp Rid. It's sold at many places including Home Depot and WalMart. Our cottage always smelled musty after being closed up for a while. This product absorbs extra moisture. You can buy it in refillable tubs or hanging bags that you can put on a closet rod. It comes in a scentfree version which is what I use. Good luck.