Can you please explain how i can completely eliminate bad breath?

Regular dental care: Regular professional dental care with a dentist and dental hygienist will eventually lead to fresh breath and healthy gums, cheeks and tongue.

May be systemic: Oral bacteria are very often the cause of bad breath, but not all the time. Some people's breath is affected by their chemistry, which can be detected in their breath the same way alcohol on someone's breath is not from their mouth - it's transferred from the bloodstream to the lungs, and expelled out the airway. Do your best with brushing and flossing, and try a mouthwash like smartmouth first.

Treat the cause: There are many causes of bad breath, both of dental and medical origin. Find the cause(s) and treat them and then maintain good oral hygiene. By far the most common cause is poor oral hygiene. See the following website for more information: http://www.Smilesapartcosmeticdentist.Com/fresh-breath-control.Htm.