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"Most people occasionally worry that they have bad breath; now a pocket-size, disposable test has been designed to indicate when they're at risk. Researchers at Tel Aviv University in Israel demonstrated that certain bacteria play a critical role in bad breath and that levels of an enzyme produced by these bacteria correlate strongly with mouth odor, as determined by independent judges. The test turns blue if a person has high levels of this enzyme in their saliva. Checking your breath with the palm of your hand is unreliable, and the best way to determine if you have bad breath is to ask somebody else to smell it, says Mel Rosenberg, professor of microbiology and founder of smellwell.com. The test (Okay to Kiss), which Rosenberg hopes to make available in a year or two, would provide a discreet, dependable self-check, he says."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.allure.com/story/breath-test-strips>