Vaping cannabis associated with cough, bronchitis and wheezing, study finds CNN 12/24/2020 By Kristen Rogers, CNN © Richard Vogel/AP In June 2019, two women smoke cannabis vape pens at a party in Los Angeles. A national outbreak of deadly lung illnesses tied to vaping transpired that year. The associations between vaping cannabis and respiratory health symptoms haven't been fully known before — but one new study has revealed a key discovery. The study, which published Tuesday in the journal JAMA Network Open, found that vaping cannabis at any frequency was linked with s...