SpongeBob SquarePants - Season 8 Episode 28 Bubble Troubles Be there and be square!
Overview: After making bubbles with hot sauce, SpongeBob and Patrick accidentally destroy Sandy's air supply by causing a fire and fill her Treedome with water by contaminating it. They must help her find enough oxygen in order to help them breath. In the end, SpongeBob goes to the surface to create a giant air-filled bubble, and puts it into the Treedome.