i read it somewhere. its one of them things. ads that wantu to think the person using it is sexy so u buy it to be like them. but the red flushed skin and fake baby oil sweat is to make u think they are sweaty thus sexy.
and another experiment showed ppl wearing the same plain white Tshirts for a week with out bathing could recongnise theirs when it was mixed in with loads of identical ones cos tof the unique scent