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Why does my breath smell?
Bad breath is common and almost always fixable. Tick what applies to you to find the most likely cause and what to do about it, privately.
Most bad breath starts in the mouth
In most people, bad breath comes from bacteria on the back of the tongue, between the teeth or under the gums. Dry mouth, fasting, smoking and some foods make it worse. Less often, it comes from the sinuses, tonsils or stomach.
This checker looks at your answers together and tells you the most likely cause first, so you know where to start. It’s private, and nothing you tick is sent to anyone.
A 4-step routine that fixes most bad breath
Clean your tongue
Every morning, from back to front, with a scraper or your toothbrush.
Clean between teeth
Every night with floss or interdental brushes. Trapped food is a major source of odour.
Drink water
Saliva fights odour. Sip water through the day, especially in the heat or when fasting.
Have a professional clean
Tartar and gum pockets need a dentist or hygienist. See teeth cleaning.
Bad breath questions
How can I tell if I have bad breath?
Does mouthwash cure bad breath?
Why is my breath worse when fasting?
When should I see a doctor instead of a dentist?
Get it checked
A check-up and cleaning finds the cause and fixes most bad breath. Consultation and X-ray are free.
A note from us
Written by the dental team at Al Jazeera Dental Clinic, a family clinic on Al Khan Street, Al Majaz 3, Sharjah, looking after Sharjah families since 1998, and medically reviewed by Dr Ranjeet Kumar, Medical Director (BDS, Diploma in Endodontics), October 2026. Not a diagnosis. Questions about your own teeth? Call or WhatsApp us.