Croqueteer,
PE is believeable because its backed up by the CAA incident report. Nothing to do with what I WANT to believe. Did the incident happen? Yes
Should the problem be addressed? Yes.
Is it a safety issue? Yes.
Have there been 3 incidents of multiple pilot incapacitation? Yes.
Is the safety of passengers and crew an issue? Yes.
Can the captain of a a BAe 146 guarantee that he can fly himself, his crew and his passengers to their destination without being overcome by fumes? NO.