Originally Posted by
bmwe92fan
I too employ the air defense method - creating my "germ block" / "stink shield" wall (do a search for stink shield on FT if you want a laugh). Unfortunately, since the air is partially recirculated on the plane - you can't block what is already in the air coming out of the vent...
Apparently most modern aircraft have pretty good filtration systems. Most sickness from travel is, I think, related to direct proximity more than recirculated air. Close quarters and the inability to move are a bad combination if one of your seatmates is sick.