Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Flatus
Medically reviewed by Min Clinic Staff | Updated: January 2026
Flatus: Gas in the intestinal tract or gas passed through the anus. Intestinal gas contains numerous gases including oxygen, nitrogen, hydrogen, carbon dioxide, hydrogen sulfide, ammonia, and methane. The foul smell usually is caused by small traces of gases such as hydrogen sulfide, ammonia, and methane.