Bad breath, also known as Halitosis, is no longer a weird or strange issue. It is actually a common predicament experienced by a lot of people. That is why the shelves of stores and pharmacies are over flowing with gums, mouth wash and the likes.
Bad breath is usually thought to be caused by poor oral hygiene. Mouth infection, gum decay or untreated mouth injuries are possible causes of mouth odour following poor oral hygiene.
On the order hand, Mouth odour can also be a sign for some other illnesses and diseases. It is one way the body sends signal about an unaccepted situations.
So, if one is having bad breath issues especially for prolonged period of time, there is need for proper check. Quit assuming possible causes and go see your doctor. Health is wealth.