Hi, First of all, you should do some investigations such as: measuring blood pressure. If it were high, you should receive medical treatment, change your lifestyle by stop smoking, drinking, eating fat-rich diet and do an ECHO on your heart. If you are a woman, you should know that oral contraceptive pills and hormonal replacement therapy can cause headache, so you should ask a gynecologist for help. Second, you should go to a neurologist for physical examination to assess your smell and memory. This is because, I need further details about these complaints. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Mustafa, Neurologist