Cold air comes in. About -50 degrees centigrade. It gets compressed to atmospheric pressure (8,000 to 10,000 ft) causing it to get very hot. It goes through air conditioners which cool it to room temperature. It gets released out of the ceiling vents. It drops down to the floor where it is sucked out of the cabin.
And if a HEPA filter the size of a jet engine does not work, that face diaper your grandma made you out of the moldy set of old curtains she found in the attic most certainly does not fucking work.
Airplanes don't recycle air you idiot. There is a complete and total purge of air about 20-times per hour. Once every three minutes or so.
Cold air comes in. About -50 degrees centigrade. It gets compressed to atmospheric pressure (8,000 to 10,000 ft) causing it to get very hot. It goes through air conditioners which cool it to room temperature. It gets released out of the ceiling vents. It drops down to the floor where it is sucked out of the cabin.
And if a HEPA filter the size of a jet engine does not work, that face diaper your grandma made you out of the moldy set of old curtains she found in the attic most certainly does not fucking work.
There is nothing scientific about it. It is basic engineering.