Sneezing after meals is an unusual but not unheard-of symptom following sleeve gastrectomy. In many cases, it is related to the body’s vagus nerve response, which can be stimulated during and after surgery. This nerve is involved in digestion and satiety, and sometimes it can trigger sneezing, hiccups, or even a runny nose when the stomach fills with food. Another possibility is that eating more quickly than your new stomach can comfortably handle leads to pressure changes that provoke this reflex.