A medical condition characterized by persistent bad breath or foul-smelling breath, often caused by bacteria in the mouth or digestive issues.
From Latin 'halitus' meaning 'breath' or 'vapor,' combined with the medical suffix '-osis' (disease or condition). The term was popularized in the early 1900s by pharmaceutical companies marketing mouthwash and breath fresheners.
Halitosis was basically invented as a marketing term by the company Listerine in the 1920s—they needed a scary-sounding medical name to sell mouthwash, so they took the Latin for 'breath' and added a disease suffix!
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