Tobacco Smoke Identification How many times have you seen that people smoke around you? How many times have you seen that people go to buy tobaccos? How many times have you been involved in a mass of tobacco smoke? When you are involving in these situations, how do you feel about it? Currently a huge number of people in our world are addicted to tobaccos. Most of us know that smoking tobacco is harmful for our health. According to tobaccofreeweld.com, there are many cons for smoking such as increasing high risk of heart attack, anxiety and other chronic disease to personal health. However, even though most people know that smoking tobacco is harmful fewer people acknowledge that the tobacco smoke can also hurt our health. Most people are told that the toxic chemicals are frequently found in cigarette while some of them may not know that these toxic chemicals are contained in cigarette smoke as well. “… Cigarette smoke is a complex mixture of chemicals. Some smoke components, such as carbon monoxide (CO), hydrogen cyanide (HCN), and nitrogen oxides, are gases. Others, such as formaldehyde, acrolein, benzene, and certain N-nitrosamines, are volatile chemicals contained in the liquid- vapor portion of the smoke aerosol…” According to Cigarette Smoke Components and Disease by Jeffrey E. Harris, we can see that there are several toxic chemical elements contained in tobacco smoke such as Carbon Monxide, Hydrogen Cyanide and so on. Scientists have discovered that when one person is smoking around a group of people, not only he would be affected by the toxic cigarette elements but also the group of people around him would be “poisoned”. This group of people is called “secondhand smokers” and the cigarette smoke is called “Environmental Tobacco Smoke” which stands for ETS. Based on the report from United States Environmental Protection Agency (EPA) website, EPA concludes