The Air Dome Generator is a device in Borderlands: The Pre-Sequel that appears abundantly in areas with no atmosphere. They can be activated by approaching it and pressing the "Use" button. They can also be activated and deactivated by attacking them with anything that deals shock damage.
When activated, they create a bubble of breathable atmosphere. This not only replenishes oxygen reserves but can also be used to set enemies on fire using incendiary weapons.