2023 Yes https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-023-16989-7 Stampfer, Orly North America Qualitative Particulate Matter (PM) Indoor air quality Interviews Low-cost sensors particulate matter Schools Wildfire smoke. Three major themes were identified by organizing complementary codes together: (1) Low-cost sensors are useful despite data quality limitations, (2) Low-cost sensor data can inform decision-making to protect children in school and childcare settings, and (3) There are feasibility and public perception-related barriers to using low-cost sensors.