Wash your feet properly with water and soap:
There are numerous sweat glands on the feet which produce fat, sodium chloride, water and acids. When these sweaty secretions combine with bacteria they produce a bad smell. Washing your feet every day with deodorant soap will prevent the combination of bacteria and the sweaty secretions.
Change socks and shoes every day:
Wearing the same pair of shoes and socks for more than one day or on two consecutive days is a major cause of foot odor. You should give your shoes and socks time to breathe by airing them between wearing for at least 24 hours. You can also sprinkle the inside of your shoes with cornstarch to absorb moisture and keep them dry. You should change your shoes and socks more regularly to allow them dry and air.
Wear open shoes:
If you have a foot odor problem then you should consider wearing open shoes. The shoes allow air onto the feet which facilitates evaporation of sweat thus slowing down the growth of odor-causing bacteria. Leather or canvas shoes are also good because they allow your feet to breathe a bit.
Diet is another factor that has direct impact on foot odor. You should avoid foods such as peppers, onions, garlic and scallions. These foods have strong substances which when combined with blood becomes concentrated in your sweat.
Avoid or manage stress:
Anxiety and depression increases production of sweat allowing bacteria that causes foot odor to feed and grow. Therefore if you are stressed and anxious at all times, it is time to learn how to manage the stress and anxiety. This will largely reduce production of sweat.