Gas stoves are used in approximately 50 million U.S. homes (1) and millions more worldwide (2, 3). Gas and propane combustion in stoves emits hazardous air pollutants, including nitrogen dioxide (NO2), benzene (C6H6), carbon monoxide (CO), formaldehyde (H2CO), and ultrafine particles (4–12).

Which of those seem harmless to you? “Nuh uh” isn’t particularly compelling.