So sad regarding the scarring and gliosis. It would be good to get a full evaluation of any potential symptoms along with your smell and taste. Loss or damage to a major sense, such as smell and taste, does hit one hard. When I lost mine after a moderate TBI 32 years ago, I had a lot of dreams about head injuries and being surrounded by smells and tastes. I ate foods that I couldn't taste and told my brain what it was supposed to taste like; don't know if that helped but it gave me some power and my smell and taste came back within a couple of years. I found it good to focus on what I had, rather than things like not remembering my name. The brain rewires, and hopefully with your youth you can heal from the damage.