I’ve never seen them in gas stations or hardware stores in my state before but I’m not a chemist and want to be safe too so I wouldn’t exactly feel comfortable trusting myself not to grab something that could end up being harmful. Feel free to DM me if you find more specific info on where your friend gets them

No it’s not just being super horny and fucking. It’s beyond that, and in my experience, after penetration has started. It’s this zone where there’s no thinking happening, just feeling and pleasure exist and it feels like your head is swimming in ecstasy