How they work: Fibrous vegetables, such as celery and cucumbers, boost your mouth’s saliva production, which washes away odor-causing bacteria. In fact, holding a slice of cucumber between your tongue and the roof of your mouth for about 90 seconds helps limit odor. Crunchy vegetables help remove plaque on teeth and gums, which bacteria can feed on, says Gregg Lituchy, a cosmetic dentist in New York City.
Good to know: Parsley has the same odor-neutralizing effect as vegetables. So the next time you’re out to dinner, chew on your garnish (discreetly!).