Hey Terri, this happened to me too !
Interesting topic: There have been many studies on the effect of radiation to smell and taste. The ones I read describe the different type of damage radiation does to the sense of taste that we are all familiar with but conclude that the sense of smell recovers better and quicker. Some note in passing that the sense of smell of radiated patients is often better than control groups of non cancer patients.
My personal experience is that I now can detect faint odors that before I would not have noticed, especially food related ones and personal hygiene.
The studies also note the difficulty in separating the gustatory (taste) and olfactory (smell) systems since they are so intertwined in our bodies.
None really focused on this aspect - or rather none that I found.
Charm