How to Eliminate Bad Breath Caused by Stomach Conditions
Bad breath, also called halitosis, is a common problem. Foods such as garlic, onions, or fish often cause it. Halitosis can also be related to a problem with the teeth, gums, or tongue that a change in hygiene could help. Other causes of bad breath can involve the esophagus, stomach, or intestines, requiring medical treatment to resolve.
Source: Verywell Health