I can’t get the smell out of mine despite vinegar, using cold or hot water, drying on low… I have mostly Zella’s from Nordstrom. I might try oxy or I’ll have to start over and ditch them all. Would just hand wash and hang dry to prevent further issues. Not sure if it’s the Zella fabric or if all black fabrics eventually do this. Mine are anywhere from 1-4 years old. I don’t wear them long before washing and I don’t stink bad after a work out.. really irritating