2024 Yes Exposure to indoor air contaminants in school buildings with and without reported indoor air quality problems https://www.sciencedirect.com/science/article/pii/S0160412019338838 Vornanen-Winquist, Camilla Europe Experimental Exposure Teachers Students Ventilation rates Temperature Humidity Carbon Dioxide (CO2) Volatile Organic Compounds (VOCs) Bacteria Fungi Respiratory symptoms Vision Headaches Indoor air quality School Trichoderma Microbes Online questionnaire In six Finnish schools, perceived IAQ complaints correlated with elevated airborne microbes and Trichoderma fungi detected via air and dust sampling. Other IAQ measures showed low levels, suggesting hidden moisture or mold issues in problematic schools. 2020