In our Australian news: there are speculations about Bae 146 aircraft
being under investigation for design fault (?) .
Apparently fumes from engines are being drag into the cockpit and the cabin (faulty rubber seal?)
Md 80 (none in Australia - as far as I know) suppose to have similar problem!
Crew can get , after while - 10,20 flights, very sick and not be able to fly at all!
Any more info?