Scientists have long known that smells are one of the best ways to evoke the past.
First lube I ever got, at 17, was cherry scented
I used to have a canned air freshener that had the same smell, years later. Got me horny every. fucking. time.
I still remember this lover I had last year who had a very offensive smell. Seriously. Like sweat covered with cheap perfume. Thankfully this didn't last.
One of my ex was showering from head to toe with Dove products. I kinda get horny when using a bar of Dove now, thinking about the way his thick cock would always find a way to bury itself in my eager ass.
A former lover used to massage my entire body with Body Shop's Satsuma massage oil, especially my breasts, before making love to me for hours. I kid you not, just smelling this scent now gets me soaking wet.