extremely well worn used stinky wedge sandals ladies 6, 18years old

peeling and cracked condition with a terrible smell but the buckles still work great, I think this will be their last summer unless they are not purchased then I will save them for next summer. Purchased in high school (2006) so nearly 20 years old but have some life still left. the smell is pretty bad because they are worn when I will sweat outside the most in the summers but i'm sure they could be washed.