Funny thing-Before we bought this l950's ranch about a month ago we did not smell a thing in the basement. I has paneling-not great, but actually a pretty high grade,lighter color. There are indoor/outdoor carpets of unknown age. The lady who owned the home was meticulous. My husband says the mild odor doesn't bother him. But me-nope-I want to improve it. First off, do you think we should just get rid of the rugs.(I cannot really ascertain that the smell is coming from there-They are a berber type of rug,I think.) There is also no dehumidifier. I know I could spend a fortune on an air ventilation system, but now money is not flowing. The foundation looks quite good,no obvious leaks. For you pros, what would you do first?