Smell-O-Vision was a post-war movie theater gimmick that delivered well-timed scents to the noses of audiences to align with the movie. Did it work? Sort of. Did it ultimately fail? Yes. Does that mean it has gone away forever? No.
Stuff You Should Know
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Short Stuff: What's a mudlarker?
The shameful and harrowing story Unit 731
Selects: How Vomit Phobia Works