User blog comment:ChishioKunrin/My view on Dust (so far)/@comment-203.59.6.134-20140307155846/@comment-206.41.39.34-20140311144041

But, do keep in mind that a sneeze is extremely powerful. They can be up to 100mph, making it safe to say that simply shaking around a vial of Dust isn't going to do much harm. Being very reactant, I suppose that the force from Ruby's sneeze set off the reaction(considering the excess of Dust hanging in the air). The friction from the Dust particles colliding due to the sheer force of Ruby's sneeze alone makes it safe to say that friction can make Dust react. So, the sneeze did, in fact, make Ruby "explode."