6 Answers

bacteria in sweat.

to keep the deoderant companies in bussiness!

The sweat glands are very useful to human beings.  In the olden days when people needed to cool down in hot weather, the sweat glands provided moisture to cool down the body, thus regulating the temperature.  Today we get help from frequent showers, air conditioning, and fan, and we therefore do not depend much on sweat glands to cool our bodies off.

You may notice that some Indians have lots of body hair.  This too keeps the body cool during the hot and humid days by trapping the sweat longer to cool down the body.

The odor from armpits is caused by bacteria at work on the sweat.

Naturally the people with the least of sweat glands in the world come from cooler places.  From various tests, can you guess which group of people in the world with the least amount of sweat glands, hence, the least amount of odor?  Guess, and I will tell you if you're right.

Lastly, I haver erred by indicating that people sweat.  Technically, animals sweat, people perspire.

m Because they contain sweat glands. More sweat is produced by activity especially exercise, by not washing - it then becomes stale and smely and hair retains this but will not the normal biological response. 

not bathing, or shaving them

They do a lot of household chores with their hands.