TY - JOUR T1 - Nearly 85% of tobacco smoke is invisible—a confirmation of previous claims JF - Tobacco Control JO - Tob Control SP - 429 LP - 429 DO - 10.1136/tobaccocontrol-2012-050475 VL - 22 IS - 6 AU - Ivan L Gee AU - Sean Semple AU - Adrian Watson AU - Andrea Crossfield Y1 - 2013/11/01 UR - http://tobaccocontrol.bmj.com/content/22/6/429.abstract N2 - Tobacco control campaigns frequently make use of statistical and scientific information to inform the public and policy makers about the dangers of tobacco smoke. It is clearly crucial for the credibility of tobacco control programmes that accurate scientifically valid information is used in these campaign materials, and Siegel1 highlights the importance of ensuring that the evidence base of these materials is scientifically sound.In 2002, the British Medical Association produced a report on passive smoking that indicated: “Almost 85 per cent of secondhand smoke is in the form of invisible, odourless gases.”2 This referenced a US National … ER -