How does carbon monoxide affect a smoker’s blood?

From what i heard, when carbon monoxide is in a person's blood (smoker or non smoker) it can kill you, it is a sign of poison in your blood. With smokers it is worse because they are smoking something that has a high content of carbon monoxide which can cause heart problems, lung cancer, birth defects, etc. So thats what i think 

Thats a weird question but ill answer it i think 5.

Maybe meditation,stress relievers,try to have quite time try to get school done on time and try to go to bed earlier