Smelling your body odor in a dream denotes your social acceptance. Eliminating body odor is commonly referred to as a social norm and a courtesy to those around you, smelling your body odor in a dream points to how you fit in with those around you.
Being humiliated by your body odor means you are likely not happy with where you stand socially. Smelling your armpit with no body odor symbolizes that you are likely content with where you are socially, but still concerned with how to maintain your social position.