What factors contribute to poor indoor air quality in homes?

Poor indoor air quality in homes can be influenced by a variety of factors, and all of the options listed—tobacco smoke, gas stoves, and mold—play significant roles.

Tobacco smoke is known to release harmful chemicals and particulates that can linger in the air and negatively affect the health of residents. It contributes to respiratory issues and can aggravate existing health conditions like asthma.

Gas stoves release combustion byproducts, including carbon monoxide, nitrogen dioxide, and formaldehyde, which can contribute to indoor air pollution. These substances can irritate the respiratory system and may lead to long-term health problems as well.

Mold growth is another critical factor, as it can thrive in damp indoor environments. Mold spores can become airborne, leading to allergic reactions and respiratory issues. Mold can also produce volatile organic compounds (VOCs) that further degrade air quality.

Given that each of these elements contributes in different ways to poor air quality, the correct answer encompasses all the provided options, highlighting that indoor air quality can be compromised by various sources simultaneously. Addressing each factor is essential for creating a healthier indoor environment.