Because you have gross feet fungus.
Moldy foot sweat
it is for women to smell baby. they like it they say.
because you don't wash your feet well and or you're wearing synthetic socks and don't change them enough
Because people usually run in them, which generates sweat, and of course stinky shoes! XD
Mine don't .. I wash them regularly so they don't stink.
But if someone has stinky feet .. they're going to have stinky shoes.
What doesn't when its time?