A sneeze inducer is something that causes a person to sneeze. Common sneeze inducers include POLLEN, DUST, allergies, PEPPER, and ragweed. POLLEN is a fine powder released by plants that can cause irritation in the nose and throat of some people. DUST is made up of tiny particles of dirt, skin cells, and other debris that can also irritate the nose and throat. Allergies are an overreaction of the immune system to certain substances, such as POLLEN or DUST, which can cause sneezing. PEPPER is a spice that can irritate the nose and throat when inhaled, causing a person to sneeze. Ragweed is a type of plant that releases POLLEN into the air, which can cause sneezing in people who are allergic to it.