TSA to Puff Flyers

[CNN reports on the TSA's new puffer machines](http://www.cnn.com/2006/TRAVEL/01/10/airport.security.ap/index.html?section=cnn_travel) that “puff air onto a person to dislodge tiny particles from skin and clothing and then analyzes the particles for traces of explosives.” That’s cool and creepy at the same time. I mean, is the puff like those at theme park, where air blows to simulate an arrow shooting by your head? Does it mess up your hair? Blow up your skirt, like Marilyn Monroe standing on a vent? What if you have dandruff, does it look like a snowstorm when you get puffed?