[lxchase]

I hope it is not just me (please someone tell me), but I find that if you let a load of wet laundry sit overnight, it starts to stink?

[tourmalinetaco]

It’s called mildew.

“In places with stagnant air, such as basements, moulds can produce a strong musty odour.”

[0] - https://en.m.wikipedia.org/wiki/Mildew