I called the pharmacy and they did not have heightened sense of smell as a side effect, but I think that's what's causing it. I have a very keen sense of smell but today it seems I can smell everything -- my son's BO, my dog's medicine, my basement -- all much more intense than ever before. The pharmacist mentioned taste aversion and I wonder since smell and taste are so related. I have been on it off and on for about three months. One and half month on -- two weeks off, two weeks on.