Why Do My Socks Smell So Bad?Tips for Sweaty Feet | Smelly Feet Why do My Socks Smell So Bad? Sweaty Feet (Bromodosis) Feet smell or socks smell caused by feet sweating, also known as hyperhidrosis, is a very common cause of smelling socks. Nearly 15% of people have very smelly feet only because of bacteria that grow on sweaty skin. Because feet sweat more than other parts of the body. Bromodosis or smelly feet is because of a buildup of sweat, which results in bacteria growth on the skin. These bacteria cause bad odors. Fungal infections like athlete’s foot can also lead to bromodosis. When you take off your shoes at the end of a long day, you suffer from a bad…