Anxiety and Irritability
This two effects manifest only when the individual decides to and actually stop smoking. This is among the worst withdrawal effects of smoking. The feelings of calmness and being relaxed brought by the nicotine will be replaced by consistent feeling of anxiety and irritability. But do not completely worry, because these only manifest on the initial stages of withdrawal. If you were able to move past this, you will be able to withdraw completely from alchohol use.
Cold and Flu
These effects are brought about by viral infection a smoker gets from too much tobacco use. The immune systems of smokers are compromised because of smoking. This means that if the smoker is exposed to only a little amount of virus, his or her immune system would not be able to shield the body from it, thus the cold and flu.