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High-Tech Smell Sensors Aim to Sniff Out Disease, Explosives—and Even Moods

“It’s absolutely a growing field,” says Andreas Mershin, an odor-sensor researcher at the Massachusetts Institute of Technology. “We’re recognizing that there’s a whole world of molecules we’re blind to.” He calls the field an “unexplored goldmine.”

"Goldmine" is the key word there.

And then someone will develop a whole range of anti-smell smells, and we'll be off.