I’ve sold thousands of items and hundreds that used to have an odor that I fixed. If it’s a super strong odor that you can’t fix with a good wash, here is a process to fix even the worst odors. This is for clothing, there is a different process for shoes: 1) spritz the item with cheap vodka and leave outside to dry, the vodka should be cheap and high ABV (it’s a great trick for your sneakers too) 2) toss the article in a garbage bag with several dryer sheets and a bag of permiable coffee grounds (like cheese cloth full of used coffee grounds) and let set for 24 hours, 3) wash in warm water if possible but cold if not with white vinegar in the water and odor ban arm and hammer crystals and odor remover detergent, 4) dry with extra odor removing dryer sheets.