Cyanide said:
Both of these products can cause cancer but which is safer?
you mean stuff like e-cigarettes? Indoor use? they arent that good for you, in general smoking isnt safe and to me not even addictive, I wouldnt recommend starting as it is a nasty habit and holds you back from doing things you enjoy.
Its a similar thing with marijuana. There are these 'legal' products around that can cause brain damage, I mean why would you risk that. Its your body or the law, and if your deemed to start smoking then make sure you understand what your doing.
in my opinion, dont start. I wasted £7( like $13 ) a day at one point.