That's true, ecigs introduce different types of risks:

Wikipedia: "The recent rise in the use of electronic cigarettes, many forms of which are designed to be refilled with nicotine-containing "e-liquid" supplied in small plastic bottles, has renewed interest in nicotine overdoses, especially the possibility of young children ingesting the liquids."

And not just ingesting, but absorbing it through the skin.

Also: "Serious nicotine poisoning seems normally prevented by the fact that relatively low doses of nicotine cause nausea and vomiting, which stops users from further intake."