Drink plenty of water.
Insuring that you drink plenty of water throughout the day can help to control bad breath (halitosis). This can be an especially important consideration for those people who suffer from xerostomia (chronically dry mouths).
If you allow yourself to become dehydrated your body will try to conserve moisture by reducing its production of saliva. Saliva has a cleansing and diluting effect on the bacteria and bacterial waste products that cause bad breath. A reduction in the amount of saliva in your mouth can make it harder for you to control odors associated with your breath.
Rinse your mouth with water often.
Rinsing with water can mitigate bad breath problems for brief periods of time. Rinsing will both dilute and partially remove the bacterial waste products that are the cause of breath odors.