I KNOW I shouldn’t think about it, I’ll scare myself to death but after seventeen hours in the air, I can’t get the worst case scenario out of my head.
No, not a plane crash. I’m convinced that I am breathing more farts than air.

https://www.thesun.co.uk/travel/5894968/qantas-airlines-direct-flights-london-perth-australia-economy-class/