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 ...

"But since it’s acid with a lower pH than your skin, it might help ward off the bacteria in the armpit area that causes you to smell." So if you’re looking to reduce body odor in your underarm ...

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.