2 parts vinegar and 1 part hot water, soak the insoles for a few hours Place the shoes in a clean freezer bag (I’m sure you don’t want shoe germs all over your food!) and let the cold kill the bacteria for 24 to 48 hours. Wash stinky shoes in the washing machine.
How to get the stinky shoe smell out of flats: Spray with equal parts water and white vinegar. Combine 1/2 cup water with 1/2 cup white vinegar in a spray bottle. Spritz the solution inside the flats--vinegar is a great odor neutralizer.