system that released odor during the projection of a firm가상 향기 Smell-O-Vision - WikipediaSmell-O-Vision was a system that released odor during the projection of a film so that the viewer could " smell" what was happening in the movie. The technique was created by Hans Laube and made its only appearance in the 1960 film Scent of Mystery , produced by Mike Todd Jr., son of film producer Mike Todd.https://en.wikipedia.org/wiki/Smell-O-Vision
