Bad breath is typically caused by food remaining in the mouth collecting bacteria on your teeth, tongue, gums and other structures. Dead and dying bacterial cells release a sulfur compound giving your breath an unpleasant odour. Certain foods, including garlic and onions also contribute to breath odour. Once the food is absorbed into your bloodstream, it is then transferred to your lungs, where it is exhaled. Brushing, flossing and mouthwash only mask this odour.
Mouthwashing is generally ineffective for bad breath. If your bad breath persists despite good oral hygiene, there are special products our dentist may prescribe.