Gas appliances pose indoor air quality and health risks

Researchers from the University of California, Los Angeles School of Public Health have released a report detailing how gas-powered appliances impact indoor air quality and public health. The study found that during cooking, concentrations of carbon monoxide and nitrogen dioxide can exceed state and national standards. In 90 percent of modeled scenarios where a gas cooktop and oven were used simultaneously for one hour, nitrogen dioxide levels surpassed safety limits. Other potential emissions include particulate matter and formaldehyde, which long-term exposure may link to respiratory and cardiovascular diseases, cancer, and premature death.

In addition to cooking hazards, experts warn of the dangers of carbon monoxide poisoning, which is particularly risky during heating seasons. Carbon monoxide is colorless, odorless, and tasteless, making it difficult to detect without proper equipment. Symptoms such as headaches, dizziness, nausea, and drowsiness can be mistaken for fatigue or illness. Firefighters emphasize that risks increase when ventilation grates are blocked, windows are replaced with airtight versions without proper airflow, or when faulty chimneys and appliances are used. Proper ventilation and maintaining functional air exchange are critical to mitigating these indoor air quality risks.