I have been vaping Sugar Bear by Cuttwood and have really liked it until now. The last few days it has had a burned aftertaste to it. I kept replacing my coils and it would only help for a few hours. Then I cleaned my tanks and swapped the tanks. Even with a new coils in a different, clean tank it tastes burnt. It was so bad this morning and couldn't use it and bought a different flavor. I still have a whole bottle of this flavor though and hate to waste it. Any ideas about why it tastes that way?