What medication to soak feet for smelly feet also needs to be combined with the cause. Physiological factors can use hot water to soak feet. Tinea pedis can use potassium permanganate solution. Foot hyperhidrosis can use formaldehyde solution. 1. hot water foot soak: feet because of poor ventilation conditions, it is easy to lead to the accumulation of sweat on the skin for impregnation, if there is no focus on cleaning, there may be odor, at this time should pay attention to the feet clean with hot water, if necessary, can be added to the alum water, alum water can achieve the effect of disinfection, and effective removal of odor. 2. potassium permanganate solution: tinea pedis can cause foot odor symptoms, you can generally choose 1:8000 potassium permanganate solution, can achieve astringent antiperspirant, sterilization and deodorant effect. 3. formaldehyde solution: foot sweat rash is because of sweat gland excitability enhancement and lead to foot odor phenomenon, you can use formaldehyde solution, effectively achieve the effect of sterilization. Foot odor is usually with the above medication foot soak, but foot odor has many reasons, so it is recommended to choose drugs under the guidance of a doctor.