e-Cigarettes Explosion

e-Cigarettes seem to be a common thing these days. You can see the smoke (water vapor) buffing out of cars all the time. People seem to be lighting up everywhere. Is this a good thing or a bad thing? Sure, they are "healthier" (according to some sources) then a regular cigarette but does this mean people can smoke them in theaters and shopping areas? Does the possibility of them exploding create a pubic hazard? These are some questions for today's Bear With Me.