Which indoor air pollutant can come from sources such as paints and solvents?

Formaldehyde is a volatile organic compound (VOC) commonly found in many household products, particularly paints, solvents, and adhesives. When these products are used or stored, they can release formaldehyde into the air, contributing to indoor air pollution. This compound is notable for its potential health effects, including respiratory issues and irritation of the eyes, nose, and throat, as well as long-term effects with prolonged exposure.

The other options, while they are indeed indoor air pollutants, originate from different sources. Carbon monoxide primarily comes from burning fuels, such as gas or wood, and is a product of incomplete combustion. Radon is a naturally occurring radioactive gas that typically seeps in from the ground, especially in certain geological formations. Particulates comprise tiny particles or droplets in the air and can originate from various sources, including smoke, dust, and pollen; however, they are not specifically associated with paints and solvents like formaldehyde is. Therefore, formaldehyde stands out as the primary indoor air pollutant linked to the usage of paints and solvents.