We found the set-up simple and the controls intuitive, although we found the air-quality monitor on the unit not as easy to navigate
FAQ Section What is the most important difference between Double Happiness and Liqun
Hioki H, Aoki N, Kawano K, Homori M, Hasumura Y, Yasumura T, et al
Vaping poses a fraction of the risk that smoking does. Source: Quitting Smoking Through Vaping The British Heart Foundation says Nicotine, while highly addictive, is not a significant health hazard for people without heart conditions. Source: Is Vaping Safe
Incentive-sensitization and addiction
The question you need to ask yourself is not: Shall I smoke now but Do I want to become a smoker again, all day, every day inhaling the smoke into my lungs, never being allowed to stop? The answer No