NWRSG - In 1999 when Aerotoxic Syndrome was first proposed by US, French and Australian scientists. It was then that Boeing decided to return to the outside compressed air system of the B 707 - you will find all the scientific papers from the mid 1950's onwards which convinced them that they had no other option.
Terry Williams settlement against Boeing
Airbus will follow Boeing one day, as they can't cope with this sort of media:
Accident: Lufthansa A320 near Zurich on Oct 21st 2011, acrid smell in galley
Would you rather fly in a 787 or a 350?
It's a no brainer - if you understand the published facts.