The counterintuitive thing is people stand in lineups or sit shoulder-to-shoulder in airport seating with their masks off sipping coffee or eating chips, then g

The counterintuitive thing is people stand in lineups or sit shoulder-to-shoulder in airport seating with their masks off sipping coffee or eating chips, then get on the plane and put masks on. It's possible (but not proven) that inverting this would be much safer, since on the airplane the air gets exchanged a lot.