With the rise of virtual reality headsets, we've always joked about gadgets designed to stimulate the other neglected senses -- smell being the next in line. It's one of those ideas that sounds kind-of cool... until it isn't. I'm just going to say one word... and that word is "farts". As Ubisoft's "Nosulus Rift" shows, not all of humanity's creations should see the light of day.