According to the "FlyHealthy Research Team," window seats are the best because passengers in those seats had less contact with people who may be infected. It's basically because window seat passengers move less, and interact with fewer people. Folks in the middle and aisle get up, walk through the cabin and use the bathroom more, which means they have more chance to be in contact with others and their germs. Another thing to do to protect yourself is crank up the overhead vent. The theory is that the germs get blown by you before they can settle in and infect you.