Relevance, implications and dissemination Thanks to the TackSHS survey, we will provide a characterization of exposure to SHS and to e-cigarette aerosol in populations with different socioeconomic level and from various European countries. We will also provide the first estimates of morbidity and mortality due to SHS exposure at the European level, and the cost impact of interventions to control SHS exposure through purpose-built economic models. The main findings of the TackSHS survey will be disseminated on international peer-reviewed open-access journals and on the TackSHS Project website (www.tackshs.eu), and will be presented in national or international conferences.