LOL, did not mean to give you a 'fear asthma attack' <g>
Honestly, when I spread DE around I just pour it from a cup held close to the ground. Back and forth back and forth back and forth. It doesn't get 100% homogeneously distributed initially, but I am pretty confident that chickens movin' around and so forth will distribute it eventually, and you get FAR less dust kicked up than trying to "dust" it inot the coop.
JME,
Pat