Smelly feet known as hyperhydrosis and medically termed as bromodosis are a common condition in children and adults who wear shoes on a daily basis. People with smelly feet may also suffer from sweaty feet. Most people with this condition will have sweaty and smelly feet year round, not just in the hot summer months. The odor is produced by bacteria called Kyetococcus sedentarius and/or fungus that grows in the shoes and attaches to the skin. Some bacteria actually eat away the top layer of the skin, producing a foul odor. These bacteria produce more than just stinky organic acids — they also produce stuff called volatile sulfur compounds. Sulfur compounds usually are powerful and awful smelling. If you’ve ever smelled a rotten egg, you know what volatile sulfur compounds smell like.