Bad breath is a common problem that can cause significant psychological distress. There are a number of potential causes and treatments available.

Potential causes of bad breath include:

Tobacco, Food, Dry mouth, Dental hygiene, Crash diets, Drugs, ENT(Mouth, nose, and throat conditions), Foreign body or Diseases.

treatments: 

Brush the teeth, Floss, Clean dentures, Brush tongue, Avoid dry mouth and  good Diet. 

If breath odor persists despite controlling these factors, it is recommended that an individual visits a doctor for further tests to rule out other conditions.​