I don't smoke any kind of cigars and I don't encourage anyone to smoke, but that's just me .
Have you ever noticed the cloud of smoke coming out of an e-cigarette, I've seen people smoke next to a child in their car. This is dangerous behavior whatever the cigarette, electronic or not...
It's not smoke, its actually vapor, and not it's not that dangerous even for children. The fact that someone is giving and bad example to a kid is a different topic.
Thank you for this clarification @rossenpavlov, nevertheless the smoke (vapor) prevents it to see through the windscreen lol :p