References
OSHA:
https://www.osha.gov/SLTC/respiratoryprotection/
https://www.osha.gov/dsg/annotated-pels/
EPA:
https://www.epa.gov/iaq-schools/why-indoor-air-quality-important-schools
https://www.epa.gov/indoor-air-quality-iaq
https://www.epa.gov/indoor-air-quality-iaq/introduction-indoor-air-quality
https://www.epa.gov/report-environment/indoor-air-quality
American Lung Association:
https://www.lung.org/about-us/blog/2017/07/how-your-lungs-work.html
Economic, Environmental and Health Implications of Enhanced Ventilation in Office Buildings, Int. J. Environ. Res. Public Health 2015, 12(11), 14709-14722:
https://doi.org/10.3390/ijerph121114709
Bureau of Labor Statistics: