Here's another one from the "World Has Gone Mad" department:
"Our sense of smell has a strong hold on our emotions, so it is unsurprising that the movie industry has long sought to make it part of the silver screen experience.
<snip>
Japanese firm Sony may have the answer. A recent patent application described the idea of using ultrasound signals to directly stimulate selective parts of the brain to induce scents in a viewer or game player's mind. Unfortunately, to date, there has been no whiff of Sony producing the hardware required. "
http://www.newscientist.com/gallery/mg20126921800-ten-scifi-devices-that-could-soon-be-real/12Their motto? Do it, because we can.
Emil
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