This is not often mentioned on this forum but it is listed often as a symptom.
After my hospitalization for B12 deficiency 4 years ago I could not eat solid food for guessing a year. I also had no hunger.
I would experience aspiration. Often called food going down the wrong pipe. It was excruciating and could bring me to my knees.
I had to be very careful even drinking smoothies or shakes.
Not only has it resolved I can now drink very cold liquid with no issue and that has been an issue since my teens. I am 69 years old.