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>No, not necessarily.

>As pointed out in another comment : "Other infractions reportedly include smoking in non-smoking zones ...

Well, last time someone lighted a cigarette on a plane ...

> Well, last time someone lighted a cigarette on a plane ...

There are also designated non-smoking zones that are not due to immediate (as opposed to long-term) safety concerns.

The references linked in the article specifically mentions smoking on trains and planes.