In 2015, following an extensive review of the science, Health Canada issued new indoor NO2 safe exposure limits. These limits remain among the strictest in the world.
Health Canada says that most existing Canadian gas ranges do not meet its long-term NO2 exposure standard. The federal agency suggests those who cook with natural gas can reduce the risk by running a range hood on “high,” keeping its filters clean, and using only the rear gas burners.
These actions can reduce indoor air pollution, but a better solution, if you have the option, is to eliminate the hazard altogether. Switch up to healthier and non-polluting 100 per cent electric appliances.