ECS in aircraft.
To ACMS and AD. I did not mean to dismiss the issue of air contamination in aircraft. My response was in relation to the question posed by JDI in the opening post. I also agree with N1Vibes in his assertion regarding the ingress of oil particles contaminating the conditioned air entering an aircraft. Depending on the type of system it is also possible for metal particles shed from cooling air turbines to enter the air. My point was that given the relatively small number of people known to suffer illness from the effects of air contamination in aircraft it is improbable that the airlines, CX included, will do anything positive to monitor air quality. To the extent that there are many circumstances other than air travel in which our well being is at risk the issue of contaminated air in an aircraft will not be considered by airlines as a high priority item I suspect.