Genuine question: Is that better or worse? I’m assuming the air gets filtered before its recirculated but can the filtering process catch respiratory droplets?
>On most aircraft, air is also circulated through hospital-grade HEPA filters, which remove 99.97 percent of bacteria, as well as the airborne particles that viruses use for transport (many regional jets lack these filters). Additionally, cabins are divided into separate ventilation sections about every seven rows of seats, which means that you share air only with those in your immediate environment and not with the guy who’s coughing up a lung ten rows back.