A lot of people still think vaping is harmless, but scans like this are a reminder that the lungs don't always recover from the damage. Some e cigarettes contain chemicals like diacetyl, which Illicit Vapes, Retailer Pressure and the Compliance Challenge Facing the UK Vape Market Le diacethyl dans les e liquides est ce dangereux ? Illegal e cigarettes are flooding SoCal's ports and beyond Los Angeles Times