The majority of e-cigarette users have “vaped” in a smoke-free environment and most don’t view use of the devices as harmful to themselves or others, according to a US study.

Nearly three quarters of users opposed banning e-cigarette use in public spaces that are designated as non-smoking, and younger users are most likely to consider all spaces acceptable for vaping, surveys found.

“If you leave it to the e-cigarette users to interpret, they don’t think the law covers them,” lead study author Shu-Hong Zhu, a professor at the University of California, San Diego (UCSD) School of Medicine.

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