Nick Note: Want proof. To this day if a infectious TB sufferer flies for a fact it is passed around the cabin. HEPTA filers installed on the 50% air recirculation ( what they forget to tell you is they use to NOT recirculate the cabin air. But to save fuel they now circulate half the cabin air. Another deadly mistake) systems on airplanes are not enough to stop the aerosol transmission of the coronavirus. If you go to the full face respirator with the new style P3 A cartage filter with the ULPA filter material you will have the most protection possible from the coronavirus that has now gone airborne as a aerosol that they don’t want to tell you. Tell me something are you as outraged as I am?