smoke eater
1. A filtration device that removes smoke particles from the air, either by electronic or chemical means. I knew my girlfriend hated the way my apartment smelled because I smoked cigarettes indoors, so I decided to install a smoke eater so she'd be more inclined to come over.
2. dated slang A firefighter, especially before the use of compressed breathing apparatuses. I never knew my granddad. He was a fire eater in New York for nearly 30 years, and he died of emphysema when he was just 55 years old.