Nicotine and carbon monoxide start to leave your body and oxygen levels return to normal eight hours after you smoke. A day after your last cigarette, your lungs will begin to clear out the mucus and debris caused by smoking.Mar 9, 2016
Nicotine and carbon monoxide start to leave your body and oxygen levels return to normal eight hours after you smoke. A day after your last cigarette, your lungs will begin to clear out the mucus and debris caused by smoking.Mar 9, 2016