What is a primary concern for occupant safety related to indoor air quality?

Indoor air quality is crucial for occupant safety, and radon is particularly concerning because it is a colorless, odorless, and tasteless gas produced from the natural decay of uranium found in soil, rock, and water. When accumulated in buildings, especially in lower levels such as basements, radon can pose serious health risks, including lung cancer.

Regular exposure to high radon levels can lead to significant health issues over time, making it an essential consideration in building design and maintenance. Mitigation measures such as proper ventilation and sealing cracks in floors and walls are vital to ensure that indoor air quality remains safe.

While other factors such as carbon dioxide levels, mold growth, and humidity levels also contribute to indoor air quality and can affect occupant health, the unique dangers posed by radon make it a primary concern regarding occupant safety in terms of indoor air quality. Each of these other factors is important, but radon stands out due to its specific health risks and the potential for severe long-term effects.