You need to leave them a copy of this, which answers all questions...Anyone have nice official looking documents explaining some of the commonly asked questions about e-cigarettes?
http://www.hsph.harvard.edu/centers-institutes/population-development/files/article.jphp.pdf
I imagine Vocalek can point you to some additional items that CASAA has put together as well, so you might want to PM her.
You'll want to be prepared to shoot down the antifreeze argument by offering the facts.
That Dr. Siegel document has all of that information.
You'll want to be prepared to shoot down the "save the children" argument.
I would do that by explaining how much it costs to get started, and the ongoing efforts and expense.
And might want to also point out that there is no possible way to hide all of this from parents.
The fact is nobody who doesn't need nicotine already is going to spend the money or put forth the effort.
The whole idea of children or teenagers getting involved with electronic cigarettes is absolutely absurd when put in that light.