Chemicals found in e cigarettes could cause lung problems The Pharmaceutical Journal 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 Electronic Nicotine Delivery Systems (ENDS) AT Schweiz 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