Results of scientist 's research could expand recognition of `` bleed air '' Bleed air is air that passes through the engines of a plane , then into cabin . The engine has to be pressurized in order for it to work properly and this pressure can only come from outside ( i.e. outside ). Flight attendant Terry Williams believes she is a victim of fumes in cabin air .
Results of scientist 's research could expand recognition of `` bleed air '' Bleed air is air that passes through the engines of a plane , then into cabin . Boeing and FAA say air quality on airplanes is as good as in office or home . Flight attendant Terry Williams believes she is a victim of fumes in cabin air .