I can understand why it might seem suspicious, but I’d also hope that (non-exotic?) substances capable of killing at doses small enough to fit in a Tylenol pill would be in their test matrix.
Cyanide is really simple and can easily be a side product of many organic chemistry reactions, testing for it is just obvious. The ion is just one carbon and one nitrogen which can combine with many different things to make many poisonous salts. Testing for it isn't suspicious and there was very strong evidence that it wasn't a factory mistake.
colechristensen|9 months ago