This

If you are a conflict avoider by nature then you were judgemental and wrong.

If you by nature are a conflict creator then you should have slapped the cigarette out of her hand and yelled at her for hating her baby. Then tell everyone who will listen how the mother was negligent concerning the health of her child and it should be taken away from her at birth.

Right play call poor execution.
Swearing at a stranger a tad over the top.
Next time just say

I think smoking is a horrible thing to do to your unborn child.

And leave it at that. Message sent.

I wonder if cigar smoking is dangerous for the unborn child
She may have just liked the taste of it in her mouth

Even though it's been many years, this thread is making me want a cig.

My mom smoked when pregnant with all 3 of her kids. None of us were harmed. Thankfully.

She didn't know any better when pregnant with my sister and myself any by the time she was pregnant with my little brother (10 years younger) there were commercials on TV where a doctor was recommending one brand over others cause it was "smoother on your throat".

Times have changed.

My mother smoked with me. I was born 2 weeks late and weighed 9lb 11oz.