A gas leak occurs when natural gas or other gases escape from their intended containment, such as pipes or appliances. This can happen due to damaged infrastructure, faulty equipment, or improper installation. Common gases involved in leaks include natural gas, which is primarily methane, and propane. Gas leaks can pose serious safety risks, including fire hazards and health issues. Signs of a gas leak may include a distinct smell similar to rotten eggs, hissing sounds, or dead vegetation near pipelines. It is crucial to address any suspected leaks immediately by evacuating the area and contacting emergency services or a qualified technician.