Do we even need to think about it?
Why would we even consider it right, when it exposed those child to potential health issue, not to mention that they could also copy what they see so it could lead to them being an early smoker.
I read the previous comments and someone said it’s better that way because it means you’re being honest to your kids, which is just a very dumb idea.
The truth is that, if anyone who’s willing and ready to watch their kids smoke at such tender in their presence, then sure, they can go ahead and smoke in their presence, but if not, then stay as far away as you can from your kids as possible cos kids learn faster than adults.
The problem is the chemicals they add to the tobacco these days. The second problem is the lies about tobacco and nicotine being habit forming when it is really the chemicals that are added.
If you smoke in front of your kids, teach them how and where to get pure, and unadulterated tobacco, and how healthy smoking this is for them.
After all, if you eat eggplant, potatoes, tomatoes, and all kinds of other standard veggies, you are getting nicotine. It's just that tobacco is one of the plants that has the most nicotine.

EDIT: Nicotine is one of the chemicals that cures COVID-19. The reason that tobacco companies add addicting chemicals to the tobacco is so the medical has an excuse to say that nicotine is habit forming. Why would they do that? Because nicotine is naturally one of the most protective chemicals, health-wise. And if you don't get sick, you don't need the medical, and they don't make money.