Quote:
Originally Posted by Hugh
I think the "logic" is that people are sat quietly on a plane - in the theatre, they are reacting to the show (singing along, laughing, etc., all of which increase exhalations).
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Also, the air flows in aircraft 'wash' from the ceiling to floor and the air is scrubbed through HEPA filters every 1-3 minutes. The air on planes is very clean and also very dry