2022 Yes https://www.sciencedirect.com/science/article/pii/S0048969722057382 Isa, Khairul Asia Observational Exposure Study Modeling Students Middle/Jr High (6-8) Temperature Humidity Carbon Dioxide (CO2) Dust Fungi Respiratory symptoms Fungi Metagenomics Feno Asthma School children School Our findings demonstrated that the relative abundance of eight fungi species and concentration of PM2.5 were significantly associated with increased FeNO levels among doctor-diagnosed asthma group. To the best of our knowledge, this is the first epidemiological study to explore the interrelation of unculturable and rare fungi taxa with FeNO levels.