Removal of odors will depend upon what is producing them and under what conditions they are treated.

Odors are most commonly caused by spills. Spilled material produces an odor, or the odor develops from bacteria which is producing decay on the spillage. If the spilled material has not penetrated deeply into the carpet fibers, thorough washing methods can usually remove all traces of odor. The deeper a spilled material penetrates fibers, the more difficult it will be to remove all traces of the spill completely.