You can thin the CBD with terpenes, encapsulate it in dextrin, drive the terpenes off with heat, and use the now water-soluble CBD in water with an ultrasonic fogger/oil-diffuser. It won’t precipitate, but the level of solubility is pretty low even with encapsulation, think 100mg per 200ml. The evaporation rate of those units is somewhere like 50ml/hour, which works out to .83mg of CBD being vaporized a minute, or .14mg every 10 seconds. That’s a miniscule rate.
Hemp oil can be extracted through either industrial hemp or medical marijuana. It is either grown domestically or internationally, and this factor tends to dictate the quality of your hemp. Many suppliers out there ship overseas, making organically grown cannabidiol difficult to produce. It is crucial to be consuming organic hemp that is non-GMO and pesticide free to ensure the best possible experience with CBD.
Different drug tests will set different limits on the amount of THC that you are permitted to have in the blood. Full-spectrum CBD products are generally made with a small level of THC, due to the small quantity that was initially in the hemp. This will, because of the law, always be less than 0.3%, and no psychoactive effect is possible in that amount.