That's weird. Usually quitting smoking awakens your taste buds and things taste better. Maybe it's the change in taste you sense??? Are you on any meds? Some meds can cause odd tastes though it could be something else like a vitamin excess or deficiency. I know both zinc and B12 imbalances can cause taste changes. Make sure you are eating a healthy diet. No one can survive on sweets alone though most of us would like to try

If it continues to bother you, you should probably see a doctor and let them evaluate it.
And good for you for quitting smoking!