Do you die if you sneeze?
basically, when you sneeze, you die for about 1/2 a second
and god chooses to bring you back to life
that's why people say god bless you
and because you die for 1/2 second while your sneezing, that's
why you can't sneeze with your eyes open.
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Improved answer
The Birmingham Health System states, "If you try to suppress a
sneeze, you can rupture blood vessel in your head or neck and die.
If you keep your eyes open by force (while you sneeze), they will
pop out. Suppressing a sneeze can be harmful, particularly to your
ears."
I learned that if you hold in a sneeze while pinching your nose,
while it relieves the pain in your ears, "it briefly blocks the
blood flow to your heart".
I wouldn't hold it in if I were you...