puffer machine
 n.— «In airports with puffer machines, passengers are asked to step into a portal as they approach security. Once inside, jets of air blow in rapid sequence to dislodge trace particles from the passenger’s clothes and skin.» —“New machines detect explosives with puff of air” by Deborah Byrd, Joel Block Earth & Sky Mar. 5, 2006. (source: Double-Tongued Dictionary)

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