Foot fungus is a fungal infection of the foot that causes symptoms such as blisters to grow between the toes or on the abdominal area of the toes and rupture and ooze. Foot fungus is contagious. Patients usually start with one foot infected with the fungus, and as the disease progresses and infections develop between the feet, symptoms of foot fungus can appear on both feet. Foot odor can also be spread from person to person. If a healthy person wears the patient’s socks or shoes or is otherwise in contact with them, it can cause infection. Patients with foot odor should be treated aggressively to avoid aggravating the condition and spreading it to the surrounding family members. Generally, medication such as topical salicylic acid ointment or boric acid solution can be used to cleanse the feet to soften the hyperplastic keratin and then assist with antifungal drugs to kill the fungus. Those with severe foot odor can also take internal broad-spectrum antifungal drugs together with treatment, but consult your doctor for specific drugs, as some of them are harmful to the liver. In addition, people with foot odor should pay attention to not sharing foot basins with family members, and wash socks and shoes separately from others to avoid infection. Patients can wash their feet several times a day, especially after sweating, dry their feet after washing, change their socks frequently, and don’t wear shoes that are not breathable, etc. Foot disease is contagious and can easily be transmitted to others through bathing utensils and shoes and socks, so attention should be paid to active treatment and good daily care.