Arachibutyrophobia
Another phobia coming from a seemingly harmless item is arachibutyrophobia, the fear of peanut butter consumption, not an understandable fear of the ingredients themselves due to some life threatening nut allergy, but the fear of peanut butter sticking to the roof of your mouth.
This phobia is a pretty rare one, but even a small amount of peanut butter stuck to the roof of your mouth can give you the sensation of not being able to swallow properly. However, people who suffer from this phobia will elevate that sensation to the fear of choking, despite the statistical odds of an adult choking on peanut butter being extraordinarily low.