There is no safe level of exposure to Group A carcinogens which also include asbestos and benzene. 11 Secondhand smoke is the third- leading preventable cause of death in America, killing 53,000 nonsmokers each year. 12 Smoke from the tip of a cigarette has 20 times the carcinogens as the smoke inhaled by a smoker. Indoor' means 4 walls and a ceiling. It doesn't matter whether there are windows, louvers or sliding doors that open.
Smoking is permitted in outdoor workplaces, unless an employer or a local ordinance bans it.
Employers may provide breakrooms for smokers, as long as they meet ventilation requirements and as long as they also provide non- smoking breakrooms. Building Trades Workers Building trades workers and their children smoke and chew tobacco at a higher rate than the general U. S. population. U. S. Dept. of Health and Human Services, 1989. American Academy of Otolaryngology, 2000. U. S. EPA, Office of Research and Development, December 1992.