Dear Faldage: look at last line of the etymology.
Musk= aroma of athletic supporter?
musk

PRONUNCIATION: msk
NOUN: 1a. A greasy secretion with a powerful odor, produced in a glandular sac beneath the skin of the abdomen of the male musk deer and used in the manufacture of perfumes. b. A similar secretion produced by certain other animals, such as the otter or civet. c. A synthetic chemical resembling natural musk in odor or use. 2a. The odor of musk. b. An odor similar to musk. 3. A musk deer.
ETYMOLOGY: Middle English, from Old French musc, from Late Latin muscus, from Greek moskhos, from Persian muk, probably from Sanskrit muka, testicle. See ms- in Appendix I.