Foul-smelling feet is a condition that is observed a lot by Podiatrists. It is a common problem for those who experience it (and the people around them!). The main approach to tackling the smelly foot is to reduce the moisture and stop the deterioration of the constituents of the perspiration that lead to the odor. Odor-masking products can also assist in this case. https://ipodiatry.org/smelly-foot/4115/