Originally Posted by
Dogma
The quality air supply to any sealed vessel is vitally important.
However having flown for decades and scrutinised the situation, aside from isolated contamination events, there is no evidence at all about the general quality of bleed air.
Pilots are all to a certain extent living well beyond the average
So all in all, no particular problem
Its stunning how and why you choose to ignore all the evidence provided to you in this thread.
Simply because you don’t suffer the consequences it doesn’t exist to you?
https://ehjournal.biomedcentral.com/articles/10.1186/s12940-023-00987-8