TxGoat wrote:
Carpets and carpet padding are often sources of odor. Most old auto carpets have been wet at one time or another, besides being saturated with dust, dander, cigarette droppings, mold, and more, such as corrosive salt or other de-icing chemicals. Getting an old carpet wet often causes an explosion of dank odor. Best to replace it. If you attempt to clean it, take it out of the car for cleaning and be sure it is completely dry before reinstalling. Always use new padding.