Hi there, Thanks for asking. You have a careful observation. Change in personality (and also aggressiveness as you mentioned), as well as change in smell, may be induced by tumors (benign or malignant) in front part of the brain. Weakness in one part of the face and on one side of your body are also important focal signs which may contribute to a mass effect (like benign tumors) or vascular event (like shortage of circulation to your brain). It is necessary that a full neurologic examination will be done by your doctor to see what issue might be responsible for your problem. Headaches
due to a mass are often more prominent in the early morning. Vascular problems are often seen in hypertensive people who may also have high cholesterol
level and diabetes
. It is useful that your ESR
level be checked to assess any possibility of inflammatory problems. I wish the best health for you.