title: Full strength to extra mild.
mesh_terms: D002248:Carbon Monoxide / Q000097:blood; D006801:Humans; D009538:Nicotine / Q000009:adverse effects; D011639:Public Opinion; D012907:Smoking / Q000150:complications*; D013638:Tars / Q000009:adverse effects
chemical_list: D013638:Tars; D009538:Nicotine; D002248:Carbon Monoxide