Poor oral hygiene, gum disease,
tooth decay, or mouth infections can also be causes of halitosis.
Smoking or chewing tobacco-based products also can cause bad breath.
Medical conditions eg
sinusitis,
bronchitis or respiratory infections can also cause
bad breath. I would suggest you to-
maintain oral and
dental hygiene. Use antibacterial mouth wash.
Stop smoking.
Get checked by ent doctor to rule out medical cause or if any medication required.
Hope this helps you.
