Do you need to sneeze be allergic something?

No, you do not need to be allergic to something in order to sneeze. Sneezing is a natural reflex that is triggered by irritation of the nasal passages. This irritation can be caused by a variety of things, including allergies, dust, pollen, pet dander, and even bright light. When the nasal passages are irritated, the body produces histamine, which causes the muscles in the nose and throat to contract and expel air forcefully, resulting in a sneeze.