Maybe they should be shown the video of the Air Canada DC-9 , - of what a fire in the toilet can REALLY do.
The misconception concerning this accident crops up regularly, although I'm surprised it would do so again on such an erudite board as PPRuNe.
The fire was not
in the toilet.
The cause was not cigarette smoking.
See either
http://www.ntsb.gov/NTSB/brief.asp?e...14X43285&key=1 or
http://aviation-safety.net/database/1983/830602-1.htm for the
facts. Assuming you care.