What is an example of a pollutant inside buildings where does it come from?

One common indoor pollutant is volatile organic compounds (VOCs), which are emitted by various household products such as paints, cleaning agents, air fresheners, and building materials like carpets and furniture. These compounds can contribute to poor indoor air quality and have potential health effects. VOCs are released into the air as these products dry or are used, often leading to higher concentrations indoors compared to outdoor environments. Regular ventilation and using low-VOC products can help mitigate their presence.