By Namita S Kalla | May 07, 2025
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Not brushing and flossing daily allows food particles and bacteria to build up, causing unpleasant, persistent mouth odour
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When saliva production is low due to medications, dehydration, or mouth breathing, odour-causing bacteria grow more easily
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Consuming strong-smelling foods like onions, garlic, and certain spices can produce lingering odours through the lungs and breath
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Smoking or chewing tobacco dries out the mouth, leaves harmful chemicals, and promotes bacteria that cause foul breath
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Chronic bad breath may indicate gum disease, where bacteria accumulate under the gums and release foul-smelling compounds
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Conditions like diabetes, acid reflux, sinus infections, and liver disease can create internal odours that affect your breath
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Keto or crash diets increase ketone production in the body, which results in noticeably bad, chemical-smelling breath
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Untreated cavities, abscesses, or infections in the teeth or gums release foul odours and worsen over time
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Debris trapped in tonsil crevices can harden into stones, which release a strong, putrid smell when disturbed
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Alcohol reduces saliva, dries the mouth, and allows odour-causing bacteria to multiply unchecked, especially with regular use