Other medical conditions that can cause bad breath include gastrointestinal issues like acid reflux or liver disease. These conditions can cause stomach acids or toxins to be released into the mouth, resulting in an unpleasant odor.
To make a baking soda mouthwash, mix one teaspoon of baking soda with a cup of warm water. Stir until the baking soda is completely dissolved. Use this mixture as a mouthwash, swishing it around in your mouth for 30 seconds to one minute before spitting it out. Rinse your mouth with plain water afterward. Repeat this process once or twice a day for best results.

Ultimately, the bad-breath campaign was so successful that marketing historians refer to it as the “halitosis appeal”—shorthand for using fear to sell product. And, while the modern advertising industry is no stranger to creating a problem to sell its solution, Listerine’s medicalization of mouth odors might just be one of the most successful iterations yet.
Both cavities and gum disease are bacterial infections of the oral tissues. Tooth decay is a bacterial infection of the hard tissues of a tooth, and gum disease is an infection of the hard and soft tissues surrounding a tooth (also called periodontal disease). Both of these conditions consist of the reproduction and proliferation of specific disease-causing bacteria, and they stink.