This was a post where a child started pretending to smoke a pretend cigarette after aunty Flo or someone had smoked near them.
I'd try to see it from the child's POV.
FRom whenever fire experimentation starts, with candles, matches and a trusted adult with a bucket of water, child has been learning that fire is HOT and has flames, and makes smoke.
Child has also been gradually learning about the sorts of things people put in their mouths. And putting fire in your mouth and then blowing smoke out is a new one.
Frankly, I'd be role playing it too.
I would think that parental or peer smoking is likely to be amuch bigger influence on a person taking it up than having one isolated aunt who does it.
(drifts off into happy memories of experimenting with dry cow parsley stalks as huge "cigarettes" as a child. THe smoke was wonderfully viscous and oily, but you had to suck on the stem to get it to come out of the top in a satisfying curly way and if you inhaled it by accident you'd be coughing evil poison out of your lungs for ten minutes...)