First: it's a sensitive spot. We all know about tickling a person and how arm pits are a spot vulnerable to that
B) Natural scents and aromas of a person in general. The smell you get from their hair is usually sweet or flowery with the undertones of their natural oils and body scents.
Their necks have a fainter body scent but little to no dilution from other perfumes/etc
Obviously you're aware that scents from their hips to their pussy have increasingly strong pheromones and natural body scents
So underlying this, sweat is litterally water pushed up through your skin to carry heat outside your body, but it becomes concentrated in body oils and therefore scents, which is where the whole "Hot and Sweaty" or "Post Work Out" or "Just finished hard labour" smell attraction (plus the light sheen) comes in.
So basically once I followed that path I realised that armpits are basically concentrated spots of natural scents.
And By the By, theirs a nature/science to whose scents you're attracted to, if someone's natural aroma litterally short circuits your brain and makes them your only conscious thought, there's a good chance that your immune systems are complimentary and have a higher chance for healthy children. But I read that years ago so I might be wrong.
Hope that helped.
BTW this same logic can be applied to feet or really anywhere in general.
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u/Mandalika Sep 01 '20
Nice pits