DY- I think you need to understand teenager physocology. A teenage kid wants to smoke e-cigs, but he doesn’t know if it is dangerous or mutar. He visits the CR and see people talking about hechsherim on it. Most do not mention the health problems, or the halachik issues. Boom, chas vesholom the kid could end up smoking if given the chance.
Do you want to be the cause of more kids smoking? Does anybody?