It would be 100 times easier to kill a child with the materials used for e-cigarettes — than if you had cartons and cartons of cigarettes laying around. The nicotine concentrate can be absolutely deadly.
We might also consider it reasonable to ban any poison that a child could get it;s hands on. Household cleaners....Alcohol...etc,,etc,
Naw,,,lets allow responsible adults to keep all of those items out of the hands and mouths of children