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"The results of this study support health warnings that there is no safe level of exposure to tobacco smoke," study leader Maki Inoue-Choi said

Whether its in school, the office, on the subway or simply at home, most people spend about 90% of their time indoors

The only rational use of the gag reflex appears to be certification of brain death

Some of the most harmful chemicals found in tobacco smoke include: Tar Nicotine Carbon monoxide Benzene Styrene Aromatic amines In addition to these carcinogenic chemicals, tobacco smoke also contains a number of other harmful substances that can damage the lungs, heart, and blood vessels