XML That Smells
At first blush, the idea sounds ridiculous. One might even smell a rat (rimshot, please!) We can only imagine what some smart-alecky 10-year-olds would do with this on their blogs and websites, after all. But the concept of transmitting smells electronically has practical applications. Devices are in the works that would, for example, detect gas leaks and other toxic odors, measure air pollution, or help prevent social embarassment by warning the owner of bad breath and other offensive body odor.