I had an extremely heightened sense of smell. It was strange. It is normal for me to experience the opposite of what the majority experiences with the same nature of sickness/virus. Everything still had the normal smells, with a variety of added hints. It lasted about three weeks. Afterward when my normal sense of smell returned, I had to relearn what stuff smells like. It left a lingering memory sense in that regular food now smells just a tad bland compared to the three week span of heightened sensory awareness.