Whether e-cigarette use precedes smoking or smoking precedes e-cigarette use is a critical question, but it is one which needs to be answered through longitudinal research. We need studies that follow the trajectory of teen tobacco/e-cigarette use over time. That is the only way to determine which comes first.

Where in the world did these reporters get the idea that thirdhand smoke could possibly be as harmful as active smoking? After all, thirdhand smoke is merely the residue from tobacco smoke that is deposited on surfaces and exposure occurs after smoking is no longer taking place.

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