Hi Dear, Welcome to HCM. Understanding your concern. Thanks for your query . Usually bad odor of feet (bromodosis)comes due to excessive sweating (hyperhidrosis) of feet . Our feet has many sweat glands and they are triggered to produce more sweat in some conditions like hormonal changes in puberty (in teenagers),in some medical conditions and stress . Excess sweat cause growth of microorganism like fungus and bacteria which further enhance bad odor . I would suggest you to :- - Don t wear same shoe daily. Place your shoes in sunlight for some time so that UV radiations of sun kill microorganism and shoe get dry in sun rays. - Try to avoid wearing nylon socks . - Sprinkle antiseptic powder on your feet before putting shoe . - Try to have shoe having pores or wear sandle . - Maintain proper personal hygiene. If condition doesn t get better or get worse then consult dermatologist for proper examination and to rule out any underlying condition like athlete s foot . Doctor may prescribe antibiotics/antifungal medication depending upon your condition . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari