"Influenza A (H1N1) and SARS-CoV-2 Transmission in Airplanes: Quanta Profiles and Infection Control" Published: September 22, 2026 A Study of 40 COVID-19 and flu outbreaks on planes found infection risk was highest near infected passengers. • N95 masks prevented almost all new infections. • Surgical masks filtering 50% of particles cut infections by 85%, versus 35% from doubling clean air. • The study warns ventilation alone may not be enough. Source: https://pubs.acs.org/esthag/article/doi/10.1021/acs.est.6c09696/5434809/Influenza-A-H1N1-and-SARS-CoV-2-Transmission-in