An invention I dislike

    An invention I dislike

                Have you ever known “Cyanide” before? I know this poison because of Detective Conan manga. Most of the chapters, murderer always used this for killing someone.

                Cyanide can be a colorless gas, such as hydrogen cyanide (HCN) or cyanogen chloride (CNCl), or a crystal form such as sodium cyanide (NaCN) or potassium cyanide (KCN).

                In my views, cyanide poison is quite dangerous because that is a rapidly acting, potentially deadly chemical that can exist in various forms. And this  is hard for investigation or find an evidence because have no color, and sometimes cyanide as having  a  bitter almond smell, but not everyone can detect this smell.