Worst Stinky Chemicals/Substances on the Earth

We smell many substances / chemicals in our daily lives. Some smell good but some do not. While not all compounds produce odors, several compounds do have recognizable odors, including: Cadaverine and putrescine smell like rotting flesh. Skatole has a strong feces odor. Indole has a mustier, mothball-like smell. Here is a list of similar chemicals that cause the most smell.