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American scientists from Purdue University in Indiana have found that when cooking on a gas stove, more nanoparticles enter the air than from the exhaust of cars running on gasoline or diesel fuel. The study was published in the scientific journal PNAS Nexus.

Experts focused on nanoparticles with a diameter of 1–3 nanometers. They easily penetrate the respiratory system and can accumulate there, causing the development of asthma and other respiratory diseases like deadly fibrosis.

Using state-of-the-art air quality measurement equipment, the scientists were able to measure levels of nanoparticles in a specially designed room. They found that when a kilogram of fuel is burned in a gas stove, up to 10 quadrillion nanoclusters of aerosol particles seriously pollute the air.

This means that when cooking on a gas stove indoors, adults and children will inhale 10–100 times more nanocluster aerosol than while standing on a busy street.

Models have shown that nanocluster aerosols are very stable. Trillions of these particles were released in just 20 minutes after boiling water or frying pancakes.

The aerosol of nanoclusters produced by gas combustion can also easily mix with larger particles released into the air from oil and other products. Scientists recommend that you always use a ventilating hood when cooking.

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