[jjtheblunt]

> The point about airplanes not running the ventilation on full throttle till takeoff has always driven me crazy.

sucking in tarmac fumes would probably create more _immediate_ symptoms that could disrupt flights than waiting to ventilate after airborne, meaning your widely shared observation might reveal a business decision.

i.e., it might be just that tarmac fumes are really bad for everyone so they choose infectious coughed air over aromatic hydrocarbons from the tarmac.

[ajmurmann]

I spent a few minutes looking into this and usually it's a mix of outside air and recycle air. However, the key point seems to be that, with the exception of the Dreamliner, the air comes form engine bleed, rather than a dedicated compressor. So that's the issue. Maybe I should just bring a little scuba tank

[jjtheblunt]

a collection of helium-air filled balloons might be more entertaining!