Yikes indeed!
As snugs asked, which candy bars? Also, was this something found in Britain or someplace like Iraq?
Sorry I didn’t respond about the candy bars immediately...I have been baking and making Sunday dinner.
The expert didn’t say WHICH candy bars. He was talking about stuff smuggled onto planes and this was one of the things that had been discovered. He also talked about glass tubes filled with explosives, and how those couldn’t be detected by X-rays.