Smoking e cigarettes delivers cancer causing chemicals that get into the body and popular fruity flavors appear to be the worst, researchers reported : r news Diacetyl in E Cigarettes, Should You Be Worried? E Cigarette Reviews and Rankings While vaping is not risk free, it is less harmful than tobacco Our World in Data Research indicates that certain flavoring chemicals used in e cigarettes can irritate lung tissue and trigger inflammatory responses in laboratory settings. Some compounds, such as diacetyl, have been linked to respiratory damage when