I live in a apartment and I have noticed a pungent odor in here. Every so often mostly very humid weather the smell is similar to the smell of a skunk almost only way of describing it. the only way to improve it is keeping it super clean and shampoo living room carpet is a must because other wise basic every day cleaning dont work nor air freshener spray either. there is black dirty look to mold on ceiling. land lord painted over it before i moved in but you can see black mold darkness bleeding through paint on ceiling. I am moving in a few weeks and pray I dont have it at new place.