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.
Can cavities cause bad breath or halitosis? Tooth decay occurs when bacteria break down the tooth enamel and dentin, resulting in cavities. The bacteria responsible for cavities can cause bad breath and are, therefore, can be one of the causes of halitosis.

Causes of halitosis can originate either inside or outside your mouth. A person with poor oral hygiene maintenance has a higher chance of halitosis than who regularly brushes. Common causes include gingivitis, periodontitis, dental caries, excessive plaque accumulation on teeth and tongue, pericoronitis, or oral ulcers. Food substances having a strong, pungent smell are another common cause. Frequent smoking, alcohol, or caffeine intake results in temporary bad breath. Any diseases or medications that cause dryness of the oral cavity are another contributing factor. Outside the oral cavity, inflammation of the tonsils or sinuses is another important factor that affects the quality of breath. Gastric diseases, especially gastroesophageal reflux, are another cause of halitosis.
The only way to prevent the bad breath caused by these habits is to quit the habit. We don’t like telling people what to do, but considering all of the serious health consequences of smoking, tobacco and vaping, we feel comfortable telling you to just quit. Not only will it improve your breath, it will protect your overall health.