Ultra-stinky

Thursday, April 16, 2009

http://en.wikipedia.org/wiki/Ethanethiol

Ethanethiol has a strongly disagreeable odor. The threshold for human detection is as low as one part in 2.8 billion parts of air. According to the 2000 edition of the Guinness Book Of World Records, ethanethiol is the "smelliest substance" in existence.

Ethanethiol is intentionally added to butane and propane to impart an easily noticed smell to these odorless fuels.

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