The paper defends its ethical standards by arguing that it "was consistent with Facebook's Data Use Policy, to which all users agree prior to creating an account on Facebook, constituting informed consent for this research."

The very idea that one would extrapolate from a study finding that vaping, like smoking, reduces exhaled nitric oxide levels to the conclusion that smoking may be no more hazardous than vaping in terms of its acute pulmonary effects defies scientific logic. It also shows a misunderstanding, or at least a misinterpretation of the meaning of exhaled nitric oxide findings.

A issued by UC Riverside states unequivocally that this research finds thirdhand smoke to be every bit as harmful as active smoking.

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