What does MCS stand for in relation to indoor air quality?

Multiple-Chemical Sensitivity refers to a condition where individuals experience adverse health effects due to exposure to low levels of multiple environmental chemicals. This sensitivity can manifest as various symptoms affecting different systems within the body, including respiratory, neurological, and dermatological systems.

Understanding MCS is crucial within the context of indoor air quality because many common indoor pollutants—like volatile organic compounds (VOCs), mold, and other chemical agents—can trigger reactions in sensitive individuals. These reactions can range from mild to severe, impacting not only the affected person's health but also their quality of life.

The other terms do not accurately capture the established definition used in indoor air quality discussions and research. They either do not exist commonly in research contexts or misrepresent the concept associated with the sensitivity to multiple chemical exposures. Hence, Multiple-Chemical Sensitivity is the most accurate and relevant term in this field.