LOL, found that this topic is quite interesting..

well, maybe because of the human pheromone..human's sweat may contains pheromones..some research say it is aphrodisiac..

n even some perfumes contain pheromones usually to attract attention, you know..some people say they like the smell, and that's because of the stimulation from the olfactory..

bras and panties usually are exposed to sweat..but this is just a theory, a hypothesis..

even males sweat contains chemical that has the same function with pheromone but never heard of a case, a girl stole boys underwear..