Baking soda has been shown to be an effective treatment for bad breath. Because baking soda is alkaline, it helps neutralize acidity in the mouth and fights odor-causing bacteria.
Choose a toothpaste that contains baking soda, or make a mouthwash by adding 2 teaspoons of baking soda to a cup of warm water. Rinse for 30 seconds before spitting it out.

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