Everyone's armpits smell different thanks to genetics ... "In the animal kingdom, body odor changes during ovulation to attract a mate and increase the odds of conception," says Toy.

Drew Barrymore and Selma Blair paused their interview in order to conduct their very own armpit smell test on Tuesday ... knew exactly why she was so attracted to a stinky shirt and called ...

Body odor from the armpits comes from bacteria metabolizing sweat produced by the apocrine glands. These bacteria are native to our skin, but the odors produced differ among people.

But the smell of tears, researchers say ... This may be because researchers have traditionally analyzed aromatics from armpits. The fact is, any bodily fluid could potentially harbor pheromones ...