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The original was posted on /r/science by /u/Skoltech_ on 2024-10-17 10:36:08+00:00.

Original Title: Researchers have trained the e-nose, which detects chemicals in the air, to identify the origin of oil. The device could be used to locate soil-contaminating oil spills, monitor the environment at refineries. It's 20 times less expensive than devices currently used.