"Long-term exposure can lead to memory loss, acute diarrhea, respiratory problems, increased heart rate, hair loss, skin rashes, muscle pains, difficulty sleeping, increased sensitivity to chemicals and chronic fatigue.
The problem with this and various "war syndromes" is the symptoms are very like stress.
Bring a soldier back from war where he might suffer post traumatic stress disorder and it packages up much better to claim the symtomes are caused by exposure to some unknown gas give it a name and sue for millions.
Maybe stress disorders are not an emotional issue but a chemical issue? Once claimed by people having conventional metal fillings in their teeth.
There has to be demonstrable reactions which can be scientifically proved to come from bleed air for anyone to do anything. At present there is no such concrete evidence and little will power to get to the truth.
On the Citation I fly loosing the aircraft heating requires using unfiltered air direct from the engine to restore heat at altitude which in this case doesnt bode well for the occupants if true.
It puts a question mark over the procedures recommended in the emergency flight manual.
Pace