No one would ever like to have sweaty underarms with strong and bad odor. It will be very embarrassing for you to go on the date with your loved one or attend a party at your friend’s house with unbearable smelly underarm.
Strong and unpleasant odor emanates from the body when the sweat glands are overactive. But it is not sweat that causes body odor. The unpleasant odor occurs when sweat mixes with bacteria. The bacteria that cause odor grow quickly in a warm, moist environment.
Sweating or perspiration is a natural process arising out of stress, exercise and high temperatures. This same natural process becomes a nuisance aka body odour, when perspiration/sweat encounters bacteria on the skin.
Sweat itself is virtually odorless to humans; it is the rapid multiplication of bacteria in the presence of sweat and what they do (break sweat down into acids) that eventually causes the unpleasant smell. The smell is perceived as unpleasant, many believe, because most of us have been brought up to dislike it. Body odor is most likely to occur in our feet, groin, armpits, genitals, pubic hair and other hair, belly button, anus, behind the ears, and to some (lesser) extent on the rest of our skin.
For more information watch the video bellow: