Apples contain a compound referred to as amygdalin within their seeds, which can be a mix of cyanide-and-sugar based molecules. The apples or apple seeds can then decompose and create the poisonous gas hydrogen cyanide. Acute cyanide poisoning is fairly exceptional, and nearly all of cases are from unintentional exposure. https://erickibiqz.jts-blog.com/29687647/the-5-second-trick-for-potassium-cyanide-inhibitor