Cooking with gas-burning stoves may fill your kitchen with more toxic air than you’ll find on Marylebone Road, one of central London’s busiest and most polluted streets, according to experts at *Which?*. 

Gas stoves emit two major air pollutants: nitrogen dioxide (NO2) and PM2.5 particles. NO2 is a harmful gas linked to respiratory problems, while PM2.5 refers to microscopic particles—each just 2.5 micrometers or smaller—that can penetrate deep into the lungs and even enter the bloodstream. 

These findings highlight the hidden risks associated with gas stoves, emphasizing the importance of better ventilation and considering alternative, healthier cooking technologies.