Cyanide poisoning occurs when a person is exposed to cyanide, a highly toxic chemical that can be found in certain industrial processes, as well as in some seeds and fruit pits, such as those from apricots and cherries. It can enter the body through inhalation, ingestion, or skin contact, leading to rapid and severe health effects. Symptoms of cyanide poisoning include headache, dizziness, confusion, and difficulty breathing. If not treated quickly, it can result in loss of consciousness and death. Emergency treatment often involves administering hydroxocobalamin, a form of vitamin B12 that helps neutralize cyanide in the body.