Cyanide is a highly toxic chemical compound that can exist in various forms, including gas, liquid, and solid. It is often associated with industrial processes, such as mining and the production of plastics. Cyanide works by inhibiting the body's ability to use oxygen, which can lead to serious health effects or death if ingested or inhaled in sufficient quantities. Cyanide is also found in certain plants, such as bitter almonds and cassava, where it occurs naturally in small amounts. Due to its toxicity, cyanide is strictly regulated in many countries, and safety measures are essential when handling materials that may contain it.