In the absence of LC damage, it would be good to talk with a doctor to exclude injury to olfactory bulbs. I lost the ability to smell and taste for a few years after a head injury, decades ago (whiplash) but it grew back as my brain rewired. I have a friend that lost his due to brain cancer in that area; they removed the olfactory bulbs. Smell and taste is a major sense and its loss or damage must be grieved like any other. Appearance and texture of foods becomes more important. There are also risks, one can't smell chemical leaks or dead critters. Also can't smell liver and onions so its not all bad.