According to FoxNews, teens are being hospitalized with breathing problems caused by vaping.

Six cases in Illinois and a dozen cases have been reported up in Wisconsin. All of these teens are experiencing the same issues: shortness of breath, chest pain, cough, and vomiting — from vaping.

“We are deeply concerned by the severe cases of lung injury associated with vaping that we are currently seeing, these cases are extremely complex to diagnose, as symptoms can mimic a common infection yet can lead to severe complications and extended hospitalization. Medical attention is essential; respiratory conditions can continue to decline without proper treatment.” - Dr. Emily Chapman, chief medical officer at Children’s Minnesota

Maybe it's best to avoid inhaling anything other than air.