Sneezing is annoying, and who on earth is happy about it happening? Clearly nobody is happy, but at the same time you should never try to suppress that sneeze just because the actual act of it annoys you so much.
Nope, you are advised to just allow it to happen because the act of suppressing it can end up being one of the worst decisions that you have ever made in your life. Why? By trying to stop that sneeze, you are going to be putting added pressure on blood vessels in both your head and neck, with the outcome being that you could end up rupturing one and, well, dying.
Yes, you could actually die from it, which is pretty scary when you stop and think about it for a moment.