Bad breath howvto cure?

Depends on cause: See the following website: http://smilesapartcosmeticdentist.Com/fresh-breath-control.Htm there are both dental and medical causes of bad breath. You really can't "cure" bad breath although you can prevent or treat it. The most common cause is poor oral hygiene. See a dentist (and\or a physician) for help and guidance.

Stop bleeding gum.: Gingival bleeding leads to release of variable sulfur compound (vsc) which leads to halitosis (bad breath). Causes of gingival bleeding are diastema leads to food impaction, poor restorations, infection drainage, periodontitis, and dental malocclusion. Other medical reason could be GI related.

Dental help: Dentally, keeping your mouth clean by brushing and flossing several times daily to keep the gums in good health may help. Gum disease is a primary cause. Brushing or scraping your tongue will remove most gunk that contributes to halitosis. A products from smartmouth are good to eliminate factors causing bad breath. If these do not help, see your md for other systemic reasons.