Bindair Dundat
My point is, come up with a decent plan that acknowledges the problem and offers a solution that mitigates the risk.
Be it engineering or procedural or both.
Maybe study the schematic of how your ventilation actually works. That might answer your "thousands of aircrew" comment. Seriously?
Get schooled up on what the science says about the problem. I bought three published, peer reviewed scientific papers to the discussion.
You brought what? Statements that can be proven wrong by anyone with 10 seconds to spare and internet access.
Maybe learn what retrospective means in the scientific/ medical context.
You will have to do better than that to convince the travelling public and in many cases legislators and regulators.
I'm with you - air travel has to get back to normal.
But your standard of reasoning is going to have to go up a couple of notches to be even remotely convincing.