Can planes be poisonous?
http://news.bbc.co.uk/today/hi/today/newsid_8270000/8270978.stm
http://news.bbc.co.uk/today/hi/today/newsid_8270000/8270978.stm
"The BBC has been told of new research linking toxins found in the air systems of commercial airliners and neurological damage suffered by pilots."