Baby gas is a type of gas invented by Plankton. It is used to turn fish into babies and appears in the episode "Goo Goo Gas."
The baby gas has three alternate packaging: a tank which Plankton can carry reading "GAS," a spray pump (spray pump holds senior citizen spray), and his Baby Bombs.
Role in episode
The first time Plankton uses it, he discovers that a second dose of goo-goo gas turns the victim into an adult. He then revises it, but it only turns Mr. Krabs and SpongeBob into seniors.
Then, he makes a scientific solution and finds out he is missing baby powder. That will make the baby gas work.