Carbon dioxide, three paths splitting from above

Three paths with different emission speeds and presence

① Burp — Rapid emission through the esophagus

Direct reaction to gastric distension, the largest and most immediate portion

② Fart — Delayed emission through the intestines

The portion of gas not released by burping that is pushed down to the intestines

③ Blood absorption — Quiet emission through exhalation

Absorbed through the mucous membrane and to the lungs along with metabolic carbon dioxide