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An odorizer is a device that adds an odor to a gas. The most common type is one that adds a smelly mercaptan liquid into gas lines so that leaks can be easily detected and explosions from built up fumes prevented.
A major spur to the development of odorizers was the March 18, 1937 natural gas that leak blew up a school in New London, Texas, killing 294 children and teachers. In response Donald A. Sillers, Sr. and Alexander Clarke, Sr. invented the 'Peerless Gas Odorizer', manufactured by the Peerless Mfg, Co.
