Rapid growth in the marketing and use of e-cigarettes is
generating widespread public health debate across the
globe. Designed to provide a comparable smoking experience
to conventional cigarettes, e-cigarettes are
battery-powered nicotine delivery devices that provide
doses of nicotine through an aerosol, typically combined
with flavouring and driven by a component such as propylene
glycol [1,2]. Unlike many nicotine replacement
therapies, e-cigarettes are often marketed to smokers as