I saw someone talking about this article online and decided to also share it here, originally this story appeared on Quora. A woman was flying to Miami for work, wearing black sheer pantyhose. She got stopped by the TSA officer as she was going through security got searched. Later, the officer told her quietly why most likely she got flagged.
“A lot of times Pantyhose and Spanx or other compression type clothing make it look like you are smuggling things under your clothing. The scanner cannot detect them correctly. That is probably why it flagged you.”