E liquid is a commonly misunderstood thing, often being confused with the smoke that is produced when a person smokes a cigarette. Nothing is further from the truth, and in reality e liquid actually contains none of the carcinogens that are contained in smoke due to the fact that e liquid is not burned. E liquid is vaporized when it is placed into a tank on an e cig or in a personal vaporizer, and a battery is engaged in order to produce a water vapor. This vapor is essentially made up of the same ingredients that are used in inhalers that are prescribed by doctors in order to assist patients with asthma, although the ingredients that are transferred to the body within the vapor cloud are not medicinal. This is not to say that they are in any way harmful, but only to point out that the transfer mechanism for the ingredients is not in any way harmful to breathe, either as the person doing the vaping or a person in the general vicinity of someone who is vaping. The vapor cloud is not made up of any carcinogens, and is therefor absolutely not comparative to smoke.