E-Liquid, sometimes also called vape juice, is made up predominantly of PG (Propylene Glycol) and VG (Vegetable glycerine), and then has flavourings, water (in some cases) and nicotine added although there are some E-Liquids that contain no nicotine
if you don't smoke as an adult, you have no brain
If you do have an infection in your outer ear, the treatment is with either ear-drops (containing antibiotics) and/or a course of oral antibiotics
Either way, tobacco investors should remember that e-cig sales, while widely discussed, still don't generate that much revenue for big tobacco companies like Reynolds, Altria, or Philip Morris
doi: 10.1016/j.micron.2003.11.003