The Marini study demonstrates that electronic cigarettes do lead to a reduction in exhaled nitric oxide, which suggests that they have a mild respiratory irritant effect and induce some inflammation in the airways. This is a finding which has been reported previously in a number of studies. It is not surprising because propylene glycol is known to be a mild respiratory irritant.

The report includes pictures of product images and advertisements that appear to showcase the sweet, fruit flavorings of these products.

Third, the Surgeon General's report comes across as a project of massive hypocrisy, as the report itself complains about how tobacco-funded scientists failed to disclose their conflicts of interest. The report emphasizes that in the 50 years since the release of the report, disclosure of financial conflicts has become the "norm." It bemoans the fact that in the past, tobacco-funded scientists did not disclose their conflicts of interest, which left readers unaware of these important financial relationships.

Electronic cigarettes are a multi-billion-dollar business overseas, but in Australia they remain largely unregulated and legally contentious.

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