E-cigs allow individuals to inhale nicotine in a vapour - which is produced by heating a liquid, https://www.vapevary.com/demon-killer-slacker-cotton-60pcspackspan-class=item-clearanceclearancespan which typically accommodates propylene glycol, glycerine, https://www.vapingby.com/apple-sours-nicotine-salt-e-liquid-by-dinner-lady-salts flavourings and https:/...