I have tried all method yet there is still chronic badbreath, especially people around me use to close their nose when am sitting close to them?

So sorry!: This must be a very painful situation for you, and very embarrassing. Please make sure you see a dentist, if you haven't already, and follow your dentist's recommendations. Sometimes the problem can originate in the sinuses or from a hidden ulcer. You should meet with your doctor about this. Of course, if you are smoking, you must stop immediately, since this makes it worse. Avoid odd spices.

Tried what???: There are many different treatments for bad breath and the effectiveness depends on where the bad breath is coming from. If it is coming from your mouth, you may have gum disease, a broken down tooth, or crevices in your tongue that need to be evaluated by your dentist. Mouthwashes will not take care of these problems. Proper cleaning of your entire mouth is necessary.