Odorama (scratch-and-sniff cards handed out to the audience - also included with the DVD releases!) for "Polyester": https://en.wikipedia.org/wiki/Polyester_(film)#Odorama
I didn't know this until just now, reading that Wikipedia entry, but apparently Waters was influenced by another Castle film gimmick, Smell-O-Vision used in "Scent of Mystery."
― ernestp, Tuesday, 20 December 2022 19:36 (one year ago) link