Hi ts,i Never encounter this problem coz i make sure i dry my feet really good before i put my socks and shoes on and I often lotion my feet and still let the lotion dry and if your a sweaty person that can cause the odor because of that moist being trap inside your socks and shoes and also athletes foot causes your feet smells bad too,you can either go to the dr.or you can go to the pharmacy and try the foot powder or a cream to maybe will help your problem and with good cleaning of your feet can also help..hope it works for you..see you around ts..goodluck!