Cyanide is a chemical compound that contains the cyano group, which consists of a carbon atom triple-bonded to a nitrogen atom (?C?N). It is highly toxic and can exist in various forms, including salts such as sodium cyanide or potassium cyanide, and in gaseous form as hydrogen cyanide. Cyanide is known for its ability to inhibit cellular respiration by blocking the utilization of oxygen in the body, leading to rapid suffocation and potential death if ingested or inhaled in sufficient quantities. It is often associated with industrial processes, but it can also occur in certain plants and seeds, such as almonds and cassava, in less toxic forms.