Question.....

Uh..... I don't know....
I mean, he just lighted up some paper and pretended it was a cigarette, right? Or, did he actually have some drugs 또는 tar inside it? Was he inhaling the smoke in? WHAT WAS THE SMOKE?? SMOKE OF BURNING PAPER 또는 SOMETHING ELSE?

He might be okay. As long as it wasn't weeds 또는 anything.

Well... it's smoke... If 당신 inhale too much smoke (in an extreme case like if you're trapped in a 불, 화재 for too long) it can be very dangerous for your life... But a little bit of smoke won't kill 당신 even though it's not a very good idea...