Athlete's foot is a disease caused by a fungal infection, characterized by being contagious and recurrent. Typically, after contracting athlete's foot, small blisters may appear on the foot, and these blisters can burst, possibly resulting in an unpleasant odor or foot odor. Additionally, wearing shoes for a long time that are tightly fitted and cause excessive foot sweating might also contribute to the condition. If it is merely foot odor, it is related to the fermentation of bacteria on the foot, such as wearing synthetic socks or excessive sweating of the feet, and infrequent foot washing. These factors can all cause foot odor, which is different from athlete's foot. Foot odor requires frequent washing with hot water, and it is advisable to avoid spicy and irritating foods. Treatment for athlete's foot involves the application of antifungal creams. Furthermore, foot odor is not contagious, whereas athlete's foot is contagious.