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The original was posted on /r/todayilearned by /u/SignalHD18 on 2025-07-07 15:16:10+00:00.
Original Title: TIL that natural gas is actually odorless, and the smell we associate with it was invented in the 1970s by British engineer Peter Hansen. He was asked to create the “nastiest smell” possible so people could detect gas leaks.
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