In my technical support days, we had a woman call in complaining that our laptop was made of something improper, and it always set off the bomb sniffer at CLT (I think she was a FA for US). Never having seen the sniffer we didn't know what she meant. Eventually, it was found that her boyfriend (or hubby) was also a user of the system, and he took it to work with him .... he was in excavation ... with blasting....