To see/notice your or someone else’s armpit in your dream represents your social connections and your relationships to others.

It is the characteristics and personality that you chose to display to the public.

Alternatively, the dream may refer to something or some place that is smelly.

To smell your armpit in your dream indicates that you are making some character adjustments in order to smooth over a situation or relationship.

Alternatively, it suggests that you are looking for acceptance.