pyrazine in cigarettes Nicotine Alone Does Not Lead To Addiction: Additives Found Both Light And E-cigs Harmful Most tobacco products, including e-cigarettes,

The studies have not looked at the health effects of nonsmokers who start vaping because of the perceived innocuous health effects and because it "tastes yummy." In addition, these studies have not looked at vaping in middle school and high school individuals, the group where e-cigarette use is increasing the most in percentage of use

Governments know that

This occurred over the course of several years due to funding and budgetary complications

We suspected that this would be the case as I've written about the two stage for many years after first seeing one of Arnold Kastner's (CTC) original but larger designs in 2001