GERD does cause bad breath problems and it is the acid reflux that causes it. I spoke to my doctor about what I can do for it and he suggested that I carry a travel size little bottle of mouthwash around with me. He strongly suggests not to eat mints (which causes heartburn) or chewing gum (which wakes up your stomach acids). Hope this helps.
"Slow down and everything you are chasing will come around and catch you."
- John De Paola