Household Appliances Release Nanoparticles into the Air

Published on January 09, 2026 | Translated from Spanish
Illustration of a modern kitchen with a toaster in operation releasing an almost invisible cloud of tiny particles, while an air extractor works over it. In the foreground, a graphic shows the nanometric size of the particles compared to a human hair.

Household Appliances Release Nanoparticles into the Air

A recent study reveals that many household appliances we use daily produce ultrafine particles imperceptibly during operation. These nanoparticles, measuring millionths of a millimeter, disperse into the home environment and can be inhaled. 🏠

The Appliances That Contribute Most to Indoor Pollution

The study identifies common emission sources that go beyond visible smoke. Not only appliances with electric resistances, such as ovens or heaters, but also combustion systems like gas stoves generate these particles. The simple act of heating food, toasting bread, or frying in a pan releases a considerable amount of these nanometric contaminants.

Main Emitters in the Home:
  • Toasters and Ovens: The toasting or baking process releases particles from the food and heating elements.
  • Gas Stoves and Pellet Stoves: Combustion, even when efficient, produces nanoparticles.
  • Electric Space Heaters: Their red-hot resistances can generate emissions.
The risk is not in the smoke we see, but in the invisible emissions that occur with the routine use of appliances.

Why Children Are More Vulnerable

Developing physiology and a higher respiratory rate mean that children inhale a greater amount of contaminated air in proportion to their size. This risk intensifies in rooms with poor ventilation, where nanoparticles tend to accumulate, creating high-exposure hotspots.

Factors That Increase the Risk:
  • Staying near appliances when they are on.
  • Using devices in enclosed spaces without renewing the air.
  • Using old, dirty appliances or those with poor maintenance.

Practical Measures to Protect Home Air

To reduce exposure to these particles, experts propose concrete actions. The most effective is to actively ventilate the areas where these devices are used, especially the kitchen. It is crucial to use exhaust hoods that expel air to the outside and do not just filter and recirculate it inside the house. It is also recommended to maintain a safe distance, prevent children from playing near operating appliances, and clean them regularly to ensure optimal operation. The perfect toast may have a hidden cost, but taking these precautions helps minimize it. 🍞