The International Air Transport Association (IATA) has written this website post on aircraft cabin air quality. It references reports by various third parties such as the US Transportation Command (Transcom), Department of Defense, Airbus and Boing.
Please find the full article here: https://www.iata.org/en/youandiata/travelers/health/cabin-air/
The International Air Transport Association (IATA) is the trade association for the world’s airlines, representing some 290 airlines or 82% of total air traffic. We support many areas of aviation activity and help formulate industry policy on critical aviation issues.