There is a naturally-occurring chemical called skatole. Its claim to fame is that it is named after, and smells like, fecal matter. It's "synthetic" but also "man-made" and there's a revolting ...

Newscripts’ Jan. 2 filing on ‘poop’ chemicals featuring four of the smelliest compounds known to the human nose—indole, p-cresol, dimethyl trisulfide, and butyric acid—brought back memories for two ...

Skatole is an infamously smelly molecule that, in some anaerobic bacteria, is synthesized from ʟ-tryptophan in a four-step process. Now, researchers have found that certain aerobic bacteria only need ...