Where is sense of smell??

For the past week I have been unable to smell anything. I never realized how much I enjoyed being able to smell things! Even bad things! Well this morning I still couldn't smell anything. But then I worked out (haven't done it in about 1.5 weeks) and afterwards, I could smell! This evening it has died down to being able to faintly smell things but I'll workout again tomorrow and hopefully continue the trend! Really bizarre. Just don't understand what that's all about. Not sick and haven't had a head injury. Only thing I can blame it on is the ivf hormones. But haven't been on them for awhile now. And why was i able to regain my sense of smell after working out?? Hmmm... Oh well!