What Is Burping (Belching)?
Burping (belching) means expelling of the air or other gases from your stomach through your mouth. Many healthy people expel some non-smelling air after eating or drinking. Various health disorders can causes excessive burping.
What Are Sulfur Burps?
The smell of sulfur (sulphur) or rotten egg burps comes from hydrogen sulfide (H2S), a gas originating from sulfur-containing proteins in certain foods (see below) after they are broken down in the stomach or small intestine by sulfur-reducing microbes. These microbes may be normal intestinal bacteria or pathogenic bacteria.