An Ulcer. OK, the ulcer itself may not be the problem. But a type of bacteria that causes ulcers, Helicobacter pylori, can also trigger bad breath, according to a study in the Journal of Medical Microbiology. Treating the bacteria may get rid of the stink.

Can you have bad breath from a stomach ulcer?

Peptic ulcers occur when acid in the digestive tract eats away at the inner surface of the stomach or small intestine. The acid can create a painful open sore that may bleed. Your digestive tract is coated with a mucous layer that normally protects against acid.

How do you fix bad breath from your stomach?

Brushing twice daily and using a mouthwash helps to kill some bacteria that contributes to bad breath. Consider a probiotic. Better breath could start with a healthier gut, so talk to your doctor about taking a probiotic or adding a daily cup of yogurt to your health routine.