HEX Performance Laundry Detergent, Unscented, 100 Loads (50ld Pack of 2) – Concentrated Activewear Detergent for Odor Removal, Sweat & Residue, Fragrance-Free, HE Compatible, Biodegradable Formula

This is the product that gets that smell out for me. It's expensive, but I only use it when I have to tackle an odor, like if I leave laundry sitting too long. It says it's for athletic wear, but I use it on everything.