Research commissioned by the environmental charity Global Action Plan (GAP) has shown that peak indoor particulate matter pollution occurs during the grilling of sausages and steaks.
Tiny particles are believed to be particularly harmful to health because they can enter the bloodstream and circulate throughout the body to vital organs.
For example, cooking a Sunday roast on a gas stove can lead to contamination of the house with fine particles, the level of which is much higher than the levels found in the most polluted cities on Earth.
According to Chris Large, senior partner at GAP, it's important to understand that air pollution is everywhere, but there are many things that can be done, both indoors and outdoors. Use the car as little as possible, walk or ride a bike more, and open the window when cooking at home.