Feet, farts, balls, anus, taint, penis, pits, toes. Sweaty smelly socks and jockstraps, piss/shit/cum stained briefs and their casually wiped assholes make 'em stink like a crew of overworked stevedores.
They stink. They don't wash anything off after they cum wherever it lands in their pubic hair, and they never use a sink after a piss. Their locker rooms reek of male body odors and they are all happy about it, and revel in joyous camaraderie as they marinate in each other's manly musk.
