Believe it or not, your feet can produce a whopping half liter (over 2 cups!) of sweat in one day!
Here are some tips that may help you with what could be an embarrassing issue.
There is the obvious tip which is to be sure to wash your feet including between the toes in the shower at least once a day.
Besides this there are several different kinds of soaks you can try.
Baking Soda - Once a week create a foot bath by adding ½ cup of baking soda to about 7 litres of water in your tub. Soak your feet for about 10-15 minutes. Baking soda is a gentle alkaline powder that will neutralize odor-causing acids by restoring your skin's pH level. Finish by rinsing feet, pat them dry and then ensure you use a lotion or foot cream to keep feet well moisturized.
Tea - 30 minutes a day for a week. The acid in the tea will dry out your skin.
Salt water - Half a cup of kosher salt for every quart of water. After soaking, don't rinse, just dry thoroughly.
Vodka - Myth Busters tested the use of Vodka in a foot bath to remove foot odors. They confirmed that Vodka does indeed work to remove foot odors... not sure why you would wanna waste Vodka on your feet though...
Alternatively you can also try using antiperspirant on the bottoms of your feet. A spray or roll on will work but make sure its antiperspirant and not deodorant as deodorant will only mask the smell not help prevent it.
Smelly feet are never cute feet so if you have a problem be sure to take care of it now so that when the heat of the summer months hit you are prepared.
If you have any other smelly feet cures feel free to share them.