Experts had defined that cigarette smoke is the smoke inhaled mainstream smoke, and smoke from a burning cigarette tip is called sidestream smoke. Air pollution caused by the mainstream and sidestream smoke is called second hand smoke  or environmental tobacco smoke.

This second hand smoke is bad too, among other things, increase the risk of cardiovascular disease due to damage to blood vessels and changes in cholesterol levels.

Several studies showed that people who frequently inhale cigarette smoke from her husband for several years at risk of lung cancer by 20 percent. Meanwhile, those who inhale cigarette smoke at work or social environment, a higher risk about 25 percent.

Although Air Conditioning (AC) can remove the visible smoke in the room, but can not eliminate smoke particles because it will continue to circulate and very easily inhaled by those who are not smokers. Therefore, turn the AC is not the answer to avoid the dangers of cigarettes.

Despite the dangers of cigarettes has been understood, in fact there are still many smokers who do not care about the suffering of others. With them were still smoking lounge in the bus or work space.