That dust has left no chance to Twilight. I believe most of other ponies could have a couple of seconds to just walk away and have their sneezes in more safe place. But Twilight is totally helpless when her nose tickles — she even can’t make a few steps away (well, relax-and-enjoy attitude is good when your nose really needs to be cleaned, but not when you can make some damage
).
I just love how you explain it all.

Hahaha!
I think this sneeze was super good, two good ones!

Love her pre-sneeze face and she takes a whole panel to recover from these sneezes, which seems on par to her usual sneezes.