I have had it a few time. It seems to last about 5 days for me. I really understand the frustration. Suddenly one day it would all clear and the flavors came alive. I tried everything, but time and patience was the only thing that really worked for me. I wonder if it was the over the counter allergy meds that caused it. That was the only thing I was doing different. Are you taking any meds that you don't normally take. Just a thought.