Sulfamethoxazole and smell taste

I know this is a very mild side effect, but I just started taking this med yesterday. About 45 minutes after the first dose, I started noticing a strange smell. As the night went on, the smell intensified. It kind of reminded me of Solarcaine Burn Cream. When I woke up the next morning I also noticed a strange taste in the back of my mouth along with the smell. I've taken 3 doses now, and other than the strange smell/taste, the only other thing I've noticed was that I've been more thirsty than usual.