The mere mention of consuming apple seeds, cherry pits, apricot seeds, or bitter almonds tends to cause almost panic attacks or angry reactions in some. Why? Cyanide is in them. So they're justified in freaking out, right?

As a rumor based on too little knowledge, their concern is understandable. (...)

But as the saying goes, "a little knowledge is a dangerous thing." In this case the fear of fruit seeds and bitter almonds and other nuts is based on incomplete data. The compound containing cyanide is amygdalin.