Old Aug 13, 15, 10:48 am
  #11  
MSPeconomist
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Originally Posted by motytrah View Post
All sorts of household chemicals set off those machines. I've personally had them go off on me a couple times. Each time the TSA guy put the swab in a machine in the other line and it came back clear. These things false positive all the time.
I'm personally afraid to use hand sanitizer for this reason.
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