2024 Yes Impact of School Air Quality on Children's Respiratory Health https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6309359/ Fsadni, Peter Europe Review Students Elementary (K-5) Ventilation rates Temperature Humidity Carbon Dioxide (CO2) Carbon Monoxide (CO) Particulate Matter (PM) Volatile Organic Compounds (VOCs) Ozone (O3) Radon Respiratory symptoms Asthma Atopy Ozone (O3) School In Maltese primary schools, indoor PM2.5, CO, and ozone exceeded health guidelines. Formaldehyde, NO₂, and ozone were linked to atopy; traffic near schools was linked to wheeze. Results support improving school air quality to protect children’s health. 2018