They also found some rather unsavory chemicals, including diethylene glycol, which is an ingredient in anti-freeze. The amount is hardly toxic, but the mere fact has sent the opposing sides into respective tizzies. Despite their eponymous origins, e-cigs are currently unregulated, meaning they can be purchased by anyone willing to pony up the $50 or more e-cigs run. This children-might-smoke-it claim is one of the biggest guns in the e-cig opponents' rack. Most manufacturers sell cartridges filled with "exotic" flavors like rose and chocolate and cigar and, oddly enough, green tea -- proof beyond the shadow of a doubt, goes the argument, that these are targeted at kids.