Respiratory irritants in e-cigarette refill liquids across nine European countries: a threat to respiratory health?

Extract

The rapid expansion of the e-cigarette market across European countries has raised a number of concerns within the scientific community [1, 2]. The most recent data from across the European Union revealed a substantial increase in e-cigarette experimentation, with 15% of European citizens reporting having tried e-cigarettes in 2017, representing a 7.0% increase since 2012 [3]. Annual e-cigarette sales in Europe have reached EUR 1.33 billion, and are projected to reach over EUR 10 billion by 2020 [4].