What kind of gas does potatoes produce?

Potatoes, like most plants, primarily produce oxygen as a byproduct of photosynthesis. They take in carbon dioxide and water and, using sunlight, convert them into sugars and oxygen.

However, if you're thinking about the gas produced by potatoes when they spoil, that is primarily ethylene gas. Ethylene is a plant hormone that can accelerate ripening and also plays a role in the breakdown of the potato.

It's important to note that methane is also produced when potatoes decay, but it's produced in smaller quantities compared to ethylene.