Chew a fresh sprig of parsley, basil, mint, or cilantro. The chlorophyll in these green plants neutralizes odors.
Chew a piece of lemon or orange rind for a mouth- freshening burst of flavor. (Wash the rind thoroughly first.) The citric acid will stimulate the salivary glands—and fight bad breath
Drink plenty of water and swish cool water around in your mouth. This is especially helpful to freshen “morning breath.”
Try a 30-second mouthwash rinse that is alcohol-free (unike many off-the-shelf products). Mix a cup of water with a teaspoon of baking soda (which changes the pH level and fights odor in the mouth) and a few drops of antimicrobial peppermint essential oil. Don’t swallow it! (Yields several rinses.)
Usually, the most effective treatment is improving your dental hygiene. As part of your daily routine, you should: floss between your teeth. brush your teeth and gums.
Clean your tongue by using a small dab of toothpaste and carefully brushing the top of the tongue. Start by reaching to the back of the tongue, and then work forward toward the opening of the mouth. Brush the entire top surface of the tongue using gentle pressure, and finish by rinsing with water.