[jaclaz]

>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 ...

https://nypost.com/2018/05/30/plane-makes-emergency-landing-...

[privong]

> 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.

[shaobo]

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