A bomb shelter is a specially designed structure built to protect people from explosions, such as those caused by bombs or nuclear attacks. These shelters are often underground or reinforced to withstand blasts and provide a safe space during emergencies. They typically include supplies like food, water, and medical kits to support occupants for an extended period. Many bomb shelters are equipped with air filtration systems to ensure clean air and prevent harmful gases from entering. Some are built for personal use, while others are constructed for communities or military purposes. The concept of bomb shelters gained popularity during the Cold War, when fears of nuclear warfare were prevalent.