It can happen when you least expect it, your favorite Gi, rash guard, shorts, etc, despite washing it regularly, there is still a lingering smell. IT WON’T COME OUT. The smell mocks you; this image may come to mind
If you are tired of this guy mocking you then might I suggest using a fabric spray IN ADDTION to NOT IN SUBSTIUTION OF (repeat that last part over and over) regular washings. What I use is Fight Soap’s Gear Spray. It retails for $12.99 for an eight-ounce bottle.