Why can't we smell our own body odor?

Answer 1

because your noses are sensitive to certain things. if we could smell our own our nose would probably react

Answer 2

Yes. If you turn your nostrils inside-out and breathe through your mouth, I can always detect a little hint of nose hair and snot/boogers.

Answer 3

Most people do smell their own flatulence when it first occurs, but then you get used to the smell and don't notice it any more.