Get serious in trying to find bad breath cure and the things that can be able to stop your bad breath problems. And the foremost thing to do is to know the underlying cause of it. However, bad breath causes can vary at times and there are also some situations that tells us that bad breath does not only originate from the mouth. Just a few of the many bad breath causes to consider are: bronchitis, chronic sinus infection, pneumonia, post nasal drip, drinking alcohol, tobacco, diabetes and acid reflux disease. Seeing the dentist would be helpful to determine where you bad breath really comes from.