The Sensorama consisted of two viewing holes beneath a hooded canopy, with air vents capable of blowing a convincing breeze through a viewer's hair. Said viewer paid up in quarters or tokens to experience one of several short 3D films captured by Heilig on the 3D camera he designed and built himself. Available choices ranged from riding a motorcycle to driving a dune buggy to being a Coca-Cola bottle (likely not the only coke that went into that particular film's production) to watching a belly dancer -- a raunchy little number complete with the aroma of cheap perfume. The Sensorama also featured a vibrating seat, which would have come in quite handy for at least one of those films.
When discussing technology, the countdown to porn is invariably a short one.
As you've probably already predicted, the Sensorama flopped, and the prototype ended up rusting beneath a tarp next to Heilig's pool. (Yeah, don't feel too bad for Heilig. He worked as a consultant for Disney and won the Auteur's Award at the Cannes Film Festival in 1974. Also, dude had a pool.) Not one to be deterred, he also invented the Telesphere Mask in 1960. Similar to the Oculus Rift that we know (and barely care about) today, the Telesphere allowed you to strap miniaturized TV tubes onto your face and be bombarded by sights, sounds, scents, and breezes. Sadly, like the Sensorama before it, the invention bombed. When Heilig's widow recently attempted to donate it to a museum, they "wouldn't even take it for free," presumably due to the possibility of infecting their visitors with some sort of eyeball disease.