I need a scientist for this dilemma!

My body is weird regarding the applications of fragrances. It has become a scientific issue with me.

I used to spray my left wrist once, and then lightly rub my arms together and then over the top of my hair. I began noticing that when I did that, the scent on my right arm died faster than on my left (first-sprayed) arm. So, I now spritz my left arm once and then my right arm once, and then run both arms over the top of my hair.

Guess what?! You'll never guess, so I'll just tell you: The scent on my right arm STILL dies faster than the left arm!!! Like, by HOURS!!! It is so weird, and it is sort of creeping me out. How can the chemistry on the two sides of my body be that different?!

Does this happen to you? Why do you think that is? I look forward to any comments about this issue. For now, my only solution is to reapply to my right arm. Any other solutions?

As a side note, scents linger all day in my hair, and sometimes even after a shampoo. It's the one spot that's safe, and I NEVER spray a new perfume on my hair in case I don't like it!