OK, more tips given by this guy:
“So how do you keep your jeans from smelling after several wearings? Put them in the freezer instead of the washing machine, Levi’s suggests.”
“Instead, Bergh uses a sponge or toothbrush — and to punctuate his statement, he stood up and showed that his dark jeans were indeed clean.
Guess I need to have my valet cleaning my jeans with a toothbrush instead of tossing them in a washing machine. I’ll tell my valet to get on it right away...
Funny. I believe every pair of Levis I’ve ever owned state to wash before wearing.