Taint-must
A smell that is so grotesque, that causes the body to involuntarily gag. A smell that eredicates from the precipitation caused by the friction of an unkept, unwashed, unshaven ball sac/ anal region. Usually the result of a male not showering or changing his underwear for several days.
He was sitting in his dirty clothes next to me and all I could smell was his nasty taint-must.