Memories and physical sensations

A recent thread about the “leaping heart sensation” made me curious about something similar.
When I think back out of the blue on a sexy memory (something that physically aroused me at the time), I get a kind of surging sensation in my stomach. It’s quick and strong, and I can’t repeat it right away, even if I think of that memory again. It may occur later if I’m reminded of something arousing, but it’s not controllable.
So, does it have to do with hormones? Is it related to the above-mentioned leaping heart? And does anyone else know what I’m talking about?

I definitely know what you’re talking about. I’ve had it triggered by the smell of a lotion or perfume that reminds me of someone, or a particular voice I haven’t heard in a long time.

yeah, theres a perfume that does it for me, and that was like…9 years ago when i last smelt it!