My daughter has a Danskin leotard that is mainly nylon but also a little lycra or spandex. How can I get the perspiration odor out of the armpit area? Laundry instructions state that it can be washed but needs to line dry. I have tried hand washing and rinsing with vinegar in the rinse water. I’ve also sprayed with Febreze but nothing seems to get rid of the odor. Help!