When I was nine. My parents took me to a holiday camp, there I met this girl, my age. We got on like a house on fire (brilliantly), making arrangements to meet each other at every possible opportunity. Sex was the last things on our minds. No hormones for that.
The thing I remember about her was her fragrance, even as her face has long faded from my memory. The wonderful scent of her in a cotton polyester T-shirt on a hot summers day.
It occurs to me, that scent or fragrance is very primal, an instinctual thing.