It sounds like you might be mixing up two very different concepts! "Galaxy gas" typically refers to the gas found in galaxies, including hydrogen and helium, as well as other elements that can be part of stars, nebulae, and the interstellar medium. On the other hand, a whipped cream bottle contains nitrous oxide (N2O), which is used as a propellant to create whipped cream.
If you meant something else by "galaxy gas" or if you're referring to a specific product or concept, please provide more details!