Quote:
Originally Posted by LeatherTrumpet
and on disgusting planes
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An old school pal of mine became an aircraft engineer and he actually posted on The Facebooks a detailed explanation (with diagrams) of why this isn't actually true in modern jets. They pull in fresh air from outside and eject the old air, so the air is actually being constantly refreshed and doesn't cycle round the cabin at all. Fascinating stuff. He posted it ages ago but obviously I only saw it recently on my annual spring Facebook log-in to tell the gardener it's time to start coming round again.
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