2 weeks after ear operation, can a person smoke or not?

Smoking can definitely increase your risk of complications. In general the longer you can wait the better. Obviously, no nicotine is best. 

Thank you for your question.I would recommend to hold off on smoking for at least 4-6 weeks after your surgery. Smoking will do nothing but impair your ability to heal and could potentially cause an unwanted wound healing complication.Best of luck and hang in there!- Dr. Bryson Richards

Your plastic surgeon may have a different opinion, but I think that you will be best off avoiding nicotine. At 2 weeks, the healing process is continuing and any constriction of blood supply will not help. Best wishes for ongoing patience and an outcome that you will be pleased with long-term.