While many people think that direct use and second hand smoke are the only reasons why people are affected or even killed by tobacco, there is also another reason. This is called third hand smoke. Although it is confused with second hand smoke most of the time, third hand smoke refers to the smoke that is retained in places where tobacco users smoke. The room, the clothes, or even a person’s hair can hold smoke in them and when people inhale near these things, they would still be able to inhale the smoke. Needless to say, it also expose people at risk.