Air Quality on Flights
#7
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I carry a small tube of neo-sporin. Just before boarding a plane I put some in each nostril. If I'm on a long flight (more than 3 hours) I add another dose of neo sporin. I can't swear that it works, but I haven't had a problem since. Read this in a travel tips column.
#8
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For the benefit of xxx above, there is plenty of fresh air available. For an aircraft to fly, it needs air under the wings and thru the engines. The air in the cabin comes from the engine compressors and a percentage of it is recirculated. The percentage is essentially determined by the airline when it buys the airplane. That and the filtration chosen by the airline set the air quality and degree of freshness.
#9
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Totally agree with Charles about the airlines ability to control how much is re-used. I have a good friend who is a pilot for an airline--he says,after a long, technical explantion--that the arilines can control how much air is re-used and how much fresh air(or outside air) is filtered into the plane. They use as little outside air as possible to save on filtration and oxygenation.