Then he started asking them, “do youJUUL?" and their answers changed.

“I wasn’t even asking the right questions, and I think a lot of clinicians still don’t ask the right questions,” Winickoff said. “Once I found out that kids were using, many of them thought that what they were using was not a big deal, that maybe they could stop any time they wanted. Some of them thought that vaping was just water vapor plus some flavor.”