According the
The MailOnline:
Toxic cabin fumes can POISON plane passengers and oxygen masks are no protection warns BA's in-flight safety chief | Daily Mail Online
"The head of in-flight safety for British Airways has admitted that passengers can be 'incapacitated' by toxic fumes on planes.
"Mark Mannering-Smith reportedly wrote on an internal online forum that cabin fumes can be toxic and therefore hurt crew and travellers.
"His comments which were posted on the internet have since been deleted, but were saved by BA staff, reports
The Sun on Sunday."