In most cases, smelly feet are easy to treat. Wash your feet with an anti-bacterial soap or a mild, antiseptic solution, every day for about a week. Make sure you dry your feet well, before putting on socks or shoes. This usually reduces the amount of bacteria on the feet.
If you suspect that you have a fungal infection like athlete's foot, speak to your pharmacist about using an antifungal product to get rid of the infection.