George Marks/GettySneezing is an involuntary reflex that all humans have but we still understand relatively little about.
Following on from the news that stifling a sneeze by clamping your nose and mouth shut can cause serious physical damage, we explore some sneezing facts - and myths.
Weird things can make us sneeze
According to researchers, it's not just germs and pollen that can cause a sneezing attack.
Bright light, including sunlight, can bring on a fit of sneezing.
