I opted out of the Millimeter waves in Manchester NH airport (BTW, coolest TSA agents I ever met. One of them even said he wouldn't ever go through a backscatte

I opted out of the Millimeter waves in Manchester NH airport (BTW, coolest TSA agents I ever met. One of them even said he wouldn't ever go through a backscatter machine himself.). They detected some nitrates or nitrites, I forget which (or what those exactly mean). But that's a potential sign of explosives apparently. It's probably because I had been by a camp fire that morning. If you go camping, or shooting, you should consider cleaning your clothes before going through airport security. This was a flight to return home, so I didn't ask to leave the airport, but they did give me the option of going through the porno-scanner or staying grounded. I understand that the TSA at least claims that the scanner doesn't actually involve showing anybody an image beyond a diagram (not that I'm shy anyway), and it's nowhere near as risky as the backscatter, so I went for it this one time and I was on my way.