The weirdest one for me was the smell of the foam we used in a school production of Bugsy Malone. The Physics & Design students made the splurge guns, so I have no idea what was used.
The smell wasn't strong, but it got everywhere as most people were covered in it every night (not me - I was Blousey
) I smelled it quite distinctly in a sports/ camping goods shop a couple of years ago. The effect was immediate - in my mind I was in my school hall on a winter's evening, excited and scared. It made me feel so lightheaded I left the shop - I wish I'd tracked down what it was.
Funny - I had forgotten about it until I read Case & Spexxvet's high school related posts.