The electronic cigarette (EC), also called e-cigarette, e-cig, electronic vaping device, personal vaporizer or electronic nicotine delivery system (ENDS) has been on the market for a decade. ECs are marketed as safe products providing a sensation of traditional smoking without the harmful effects, delivering pure nicotine and releasing harmless water vapor that vanishes in seconds [Anon, 2014 and Smoke, 2014]. Puffing activates the battery-operated heating element in the atomizer and the liquid. The liquid consists of various combinations of propylene glycol, glycerin, nicotine, tobacco extracts, flavorants and/or adulterants which vaporize to an aerosol/vapor. The newer generations of ECs seem to be very efficient nicotine delivery systems
