• Question: What causes us to sneeze?

    Asked by elliejade to Laura, Sean on 23 Mar 2012.
    • Photo: Sean Murphy

      Sean Murphy answered on 23 Mar 2012:

      In most cases the cause is a foreign object (such as dust or pollen) that irritates the nasal passages. But our emotions too can bring on a fit of sneezing. Some of us may even find that bright sunlight is enough to cause sneezing. This is because the eye nerves are closely connected with the nerve endings in the nose.