Electronic cigarette oil What side effects?

I use the electronic cigarette two weeks of use are as follows:
Opium ad says Pai, what clearing the lungs, and I did not experience. And I also believe that it is purely nonsense, and I use the electronic cigarette by accident, did not expect clear what the lung that do not want to have bad breath it.
Speaking of hazards, if the electronic cigarette is not harmful, I think it is impossible, but small harm than real cigarettes I personally feel a lot, because the electronic cigarette is no cigarette tar, no carbon monoxide, smoke and liquid ingredients are food grade raw materials, and low-temperature atomization (maximum temperature of only 60 degrees nebulizer), with water vapor similar, which contains high-purity nicotine.

Electronic cigarette oil What side effects?