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A comment on Why airplane bathrooms have ashtrays. Parent comment

Re:Why airplane bathrooms have ashtrays by rshlo on Tuesday May 22, 2012 @03:53AM (#4006751)
I've heard it has something to do with the air filters. Less smoking = less clogging of the filters = less air filters replacement = more money to airlines. Just heard that, don't know if it's true.
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Re:Why airplane bathrooms have ashtrays by oneeyed on Tuesday May 22, 2012 @06:41AM (#4007189)
That's what I've been told by SNCF (the French national railroad company) officers when they forbad to smoke in trains.
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