American Heart Association (AHA) recently released a report on passive smoking. In the report, if we prevent to be exposed in passive smoking status, then it could reduce about 500 thousand people of the deceased in the United States during next 25 years. Currently, many people are exposed on passive smoking. Especially, damages of non-smokers in public places are serious. A passive smoker inhales two times of tar and nicotine than a smoker. But also, smoking in public places may cause a fire. Fire in crowded places may result in many casualties. We should ensure the right that a non-smoker can live healthy. Therefore, by these reasons, smoking in public places should be strictly restricted by a law.