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? <br /> <br />Although complete separation and isolation of smoking rooms can control ETS <br />exposure in non-smoking spaces in the same building, adverse health effects for <br />the occupants of the smoking room cannot be controlled by ventilation. <br />? <br /> <br />No other engineering approaches, including current and advanced dilution <br />ventilation or air cleaning technologies, have been demonstrated or should be <br />relied upon to control health risks from ETS exposure in spaces where smoking <br />occurs. Some engineering measures may reduce that exposure and the <br />corresponding risk to some degree while also addressing to some extent the <br />comfort issues of odor and some forms of irritation. <br />? <br /> <br />An increasing number of local and national governments, as well as many private <br />building owners, are adopting and implementing bans on indoor smoking. <br />? <br /> <br />At a minimum, ASHRAE members must abide by local regulations and building <br />codes and stay aware of changes in areas where they practice, and should educate <br />and inform their clients of the substantial limitations and the available benefits of <br />engineering controls. <br />? <br /> <br />Because of ASHRAE’s mission to act for the benefit of the public, it encourages <br />elimination of smoking in the indoor environment as the optimal way to minimize <br />ETS exposure. <br /> <br />“Environmental Tobacco Smoke,” Executive Summary, Position Document, Approved by ASHRAE Board <br />of Directors, June 30, 2005 <br />