"The American Society of Anesthesiologists issued guidance on Feb. 23 discouraging CPAP use in COVID-19 patients — advice largely informed by experience with the SARS epidemic in 2003. Studies dating to 2003 suggest such devices can pump viruses into the air, potentially increasing the spread of a contagious disease."

https://www.asahq.org/about-asa/governance-and-committees/as...