Michael J. McFadden's answer: Your question is based on an incorrect assumption. There is no "cigarette tar" in people's bloodstreams.Michael J. McFadden's answer: Your question is based on an incorrect assumption. There is no "cigarette tar" in people's bloodstreams. Whoever told you that was lying to you and was probably lying to you about other things as well. You do have extra carbon monoxide in your blood after smokin... ...read more