Is this really the kind of pure scientific expertise - unclouded by any ideological or political concerns - that we want to be making the critical decisions about how to regulate tobacco products which are killing hundreds of thousands of Americans each year?

Moreover, the users of e-cigarettes in the population were likely more addicted to nicotine, making the comparison of their quit rates with those of other smokers inappropriate.

In fact, this is precisely the way some are interpreting these findings. One on the study is entitled: "Think smoking outdoors always protects others? This study suggests not."

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