Which pollutant is commonly emitted from certain building materials?

Formaldehyde is a common indoor air pollutant that is often emitted from various building materials, including pressed wood products, such as particleboard and plywood, as well as from insulation materials, carpets, and some paints and varnishes. This compound can be released into the air over time, particularly in environments that are enclosed and not well-ventilated, leading to heightened exposure levels.

Formaldehyde exposure is significant due to its potential health impacts, which can include irritation of the eyes, nose, and throat, and in higher levels or long-term exposure, it can lead to more severe health issues. This is why it is important for those concerned with indoor air quality to be aware of sources of formaldehyde in their environments and to consider measures for reduction, such as improving ventilation or selecting building materials that are lower in volatile organic compounds (VOCs).

The other pollutants listed do not typically originate from building materials. Carbon monoxide is primarily produced from combustion processes, ozone is formed by chemical reactions in the atmosphere and is not emitted from building materials, and nitrogen dioxide is mainly a byproduct of combustion, especially from appliances or vehicles. Hence, the focus on formaldehyde highlights its relevance as a material-related indoor air quality concern.