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Virtual Reality Blueprints by John Williamson, Charles Palmer

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Why stop at just sight and sound? – Smell o' Vision and Sensorama

While this generation of VR has not (yet) added the olfactory sense to their set of outputs, this does not mean that older systems have not tried.

Movies tried to add the sense of smell in 1960 with the movie Scent of Mystery. At specific times in the movie, smells were sprayed into the audience. Some theatergoers complained that the smells were overpowering, while others complained they could not smell them at all. But everyone agreed that the movie, even with Elizabeth Taylor, was not worth seeing, and this technology quietly faded away:

Morton Heilig built the Sensorama in ...

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