What causes feces odor?

Answer by  KMcRae (714)

Feces are waste products and contain a number of gases that cause odor. They are basically anything the body doesn't need.

Answer by  cklight (327)

Feces odor is often due to undigested substances and dead bacteria from the body. Two substances relevant here are, "indole" and "skatole". High protein diets are most likely to give off this odor because they have larger portions of these odor producing particles to decompose.