Originally Posted by
Global Adventurer
You might want to go to the United Airlines forum. But, for delta airlines they don't allow anything with a vent and make passengers either cover the valve with a mask or remove their valved mask and replace it.
I was wearing respirators with exhaust valves, the ones with cartridges P100s, and the regular valved ones like the N100s and N95. I currently only wear N95s with valves and cover them with two nurses masks and wear goggles on flights. Initially, I was extremely terrified of catching the virus on planes, but now with all the research that has been done, it seems that your chances are very low especially with a N95, goggles and two additional mask on top of the respirator. So, for now thats what I wear, as the virus has been found not to be as contagious as initially suspected. Its not as contagious as the measles for instance and wearing protection can almost guarantee the lack of contraction if the air is being circulated and replace every so many minutes. But, I still travel with my full size respirators for just in case I'm stuck on a runway where they have no choice but to turn off the hvac.
United also does not allow masks with exhalation valves. If the valve is covered, it should be fine, but I imagine it is not easy to cover the respirator pictured.