One sign and symptom of h. pylori infection is halitosis. Our digestive tract runs from the mouth to the anus. Any imbalances along the tract such as in the stomach or intestine may also manifest in either or both the oral and the rectal area. Halitosis in particular is one of the signs that something is wrong in the digestive system. It is characterized by having a foul smell on the mouth cavity.
Certain substances such as hydrogen sulfide and sulfurous composition can be produced in the presence of H. pylori. These substances then lead to offensive smelling breath. If you are experiencing halitosis and have ruled it out as a dental issue, consult your physician for the possible presence of H. pylori or any infection in your digestive passages.