 [ Symptoms ] how to prevent the spread of herpes [ Disease ] if your diagnosis with h pylori is confirmed then it is definitely the cause of bad breath… although other causes may be present knowing that h pylori is a stubborn bacteria that can not be treated easily so you need to see your doctor again and get tested for blood and stool h pylori …if it is still there then you will need to be treated with a stronger antibiotics course until it disappears … do not neglect it as it has many bad complications