On rainy days, many clothes are crowded together to dry, and there will be a bad smell after drying. Why?

If clothes can't be dried for a certain period of time, the bacteria and molds left on clothes will rely on the wet water vapor on clothes and the material of clothes itself as their own breeding medium, and then the so-called odor will be formed due to metabolism. In fact, clothes should be dried in rainy days, which makes it easier to let the air circulate and dry clothes early.