Well this is cool. A professor of chemistry at Caltech, Nate Lewis, is developing something called sensory vapor technology, in essence is an electronic way to sniff out bombs and certain illnesses and even something like Anthrax, avoiding any of the risks such scenarios would pose to an actual human-flesh nose.

The eNose is still in its nascent stage of being, but already the world seems to primed for its arrival. Fewer and fewer medical students are choosing to become primary care physicians, so an iPhone app to diagnose your ills may in fact be exactly where we're headed. [OpenCulture]]