前言：有关吸烟对健康影响的社会关注在增加，被动吸烟对非吸者健康的影响，产生不快感和应激等，在劳卫省筹划制定“在工作场所吸烟对策的方针”等。在公共场所和车辆等对于非吸烟者关心的吸烟对策在进展中。但是对在个人水平的被动吸烟状况的掌握及其对策方面，尚不充分，因 Preface: There are increasing social concerns about the health effects of smoking, the health effects of passive smoking on non-sucking patients, unpleasant feelings and stress, etc. We plan to set the “Guidelines for smoking in the workplace” in the Ministry of Health, Labor and Welfare. Smoking countermeasures for non-smokers in public places and vehicles are under progress. However, it is not sufficient to grasp the situation of passive smoking at the individual level and its countermeasures because