Just adding this in for reference.
https://www.aircraftcabinair.com
I flew the Boeing 757 from 1997 to 2001 with the majority powered by the RB 211- 535C. I recall being subjected to cockpit fumes on a number of occasions with all instances written up in the tech log. At the time I felt I was unaffected although colleagues reported a variety of symptoms.
Sadly some lost their medicals and there were a small number of fatalities….
My latest diagnosis had given me pause for thought.