At the airport, my hands were screened and I failed the test, so I had to go though a full screening, including a private pat down. The TSA people were all very courteous, so no worries there, but not knowing what caused my hands to fail, I did not know what else would fail as they repeated the tests throughout my luggage, computer, etc.
Fortunately, after 30 or so minutes, I got released and was off to my gate and flight. Phew!
My working guess as to what caused the problem? I took a shower this morning, and I use an all natural shampoo. I am guessing that something in there triggered it.