The bad smell of closed shoes is one of the most common problems that many people face. Especially when the weather is hot it is more common as a phenomenon. And until you put them aside and wear open-toed shoes, you are looking for a way to eliminate this bad smell.
See, below, the clever trick to achieve them.
The solution is in baking soda. All you have to do is pour enough baking soda inside the inside of your shoes. Then put your shoes in two transparent disposable bags and tie the bags very well.
Put the bags in a cool place for an entire night. By morning all the bad smells will be gone.
What baking soda does is repel bad odors while cold, on the other hand, kills bacteria. So overnight you have again clean shoes that do not smell.