Gas pass

Dogs don't fart on airplanes.  People do.  Never in the history of the gas-blast is it as immediately as important as when on a plane to open the air-release valve above the seat full-force.  The car-fart courtesy window down is not an option on a flight.  After all, a plane is like releasing a fart in a Pringle's can and not expecting the chips to stink.  Aircraft are the ultimate in enclosed areas.  As passengers, keeping the gas in the tank benefits the long-range capabilities of the plane and it also benefits the air-quality in flight.