Vaping most THC / CBD or "juices" is not good for you. The compound they use to emulsify the nicotine, or cannibinoids, is usually vegetable oil, MCT oil, Coconut oil or vegetable glycerin. These compounds, when vaporized at the temperature required to vaporize the nicotinue or cannibinoids releases a chemical (can't remember the name) that is classified as a carcinogen. When / if you can get a pure CBD extract to vaporize it's much, much cleaner.
There are some new studies that show vaping juices is potentially more harmful to your lungs than smoking cigarettes as some of the carinogens released are much more powerful.
I don't know a lot about the juice because I don't vape juice and don't care too, but as for the green is concerned I'd recommend ordering a pure CBD extract from herbaldispatch.com or similar website that services your area, and you aren't really doing any harm other than breathing hot air into your lungs, which IMO when you weigh the pros vs the cons of vaping CBD the pros far outweigh any negatives. However you can always consider the edible option. From what I gather vaping will normally let you more "bang for your buck" because you don't have to contend with stomach acid dissolving any of the compound, and you aren't "burning" away any of the compound from setting fire to it.