Smoking or vaping: e cigarettes as a lesser evil Why You Cough When You Vape, and How to Stop It! E Cigarette Direct Frontiers Aerosolized nicotine from e cigarettes alters gene expression, increases lung protein permeability, and impairs viral clearance in murine influenza infection Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment Is passive vaping safe? Totally Wicked