From the articles that I have read, legislation regarding the regulation of electronic cigarettes were passed in 2016. In this FDA ruling, the Center for Tobacco Products, which deals with the Tobacco Control Act, will oversee activities regarding electronic cigarettes and other electronic nicotine delivery system.
Since the product recently came out and a lot of suppliers distributed the product, the regulation for the product was not initially there. However, since time has passed, control and evaluation is catching up to the product and now, the FDA has laid down groundwork to control the distribution and use of electronic cigarettes.
I believe that the e-cigarette aerosol mechanism can be taken advantage of and can be used as a drug delivery mechanism. Because of this, I believe that it should be tested completely to make sure that it will work along with its organic compounds.