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How Do Dogs Find Explosives At Airports?
Thanks, Smithsonian magazine. I will never smell spaghetti sauce the same way again.
Merry and Zane Roberts, MSA's lead canine trainer, work their way along the line of luggage pieces, checking for the chemical vapors-or "volatiles"-that come off their undersides and metal frames. Strictly speaking, the dog doesn't smell the bomb. It deconstructs an odor into its components, picking out just the culprit chemicals it has been trained to detect. Roberts likes to use the spaghetti sauce analogy. "When you walk into a kitchen where someone is cooking spaghetti sauce, your nose says aha, spaghetti sauce. A dog's nose doesn't say that. Instinctively, it says tomatoes, garlic, rosemary, onion, oregano." It's the handler who says tomato sauce, or, as it happens, bomb.