What is the definition of Notify Fumes?

"Notify fumes" is like giving a gas mask a job interview - it's super formal but totally off-putting. It's the act of telling someone that there's something dangerous in the air, but instead of using a proper incense stick or a fire alarm, you're employing your nose and some fancy (or maybe not-so-fancy) science.

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Here's a chilling example: "The factory's 'notify fumes' announcement sounded like a broken coffee grinder, but the workers were too stunned to speak."