Flavor induced inflammation and cytotoxicity in human aortic smooth muscle cells: Potential implications for E cigarette safety ScienceDirect Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine dependent manner Thorax Is lung inflammation worse in e cigarette users than smokers, as a new study suggests? Emerging medical research continues to examine the respiratory risks associated with flavored e cigarettes, including concerns about bronchiolitis obliteransoften referred to as popcorn lung. The condition involves inflammation and scarring of the