Occasional bad breath is food. Persistent bad breath usually has a source, and most of the common ones are in the mouth and treatable.
Cleaning the tongue, cleaning between teeth daily, treating any gum inflammation, and addressing dry mouth. Mouthwash masks odour; it does not remove the source.
If a thorough dental work-up does not resolve it, that itself is useful information and points toward looking beyond the mouth.
A page can inform you. It cannot examine you.
An exam and cleaning identify most causes. Mention it directly — it is a routine thing to bring up.
General information reviewed by Mankirat Gill, DDS · August 2026. Not a substitute for an in-person examination.