No matter what brand of e-liquid you use, you cannot get a real tobacco flavor unless you can precisely control the temperature of the heating element, without fluctuations, and then blend it perfectly with just the right tasting e-liquid.

No.

The finding of reduced exhaled nitric oxide is an indication that an exposure is causing some sort of inflammatory effect on cells lining the respiratory tract. It doesn't mean anything more or less than that. You can't take two exposures - each of which causes respiratory tract inflammation - and make the statement that the effects of both exposures are equal. Risk posed by an exposure depends on many other factors, including the degree of inflammation induced, the reversibility of the effect, the nature of the exposure, the chronicity of the exposure, etc.

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