A rocket stove is a small, efficient wood-burning stove. They are usually made from metal or ceramic and have a small combustion chamber with a grate at the bottom. Rocket stoves get their name from the fact that they burn fuel very quickly, like a rocket.
One of the benefits of using a rocket stove is that it produces very little smoke. This is because the combustion chamber is so hot that the wood burns very cleanly, leaving only ash behind.
However, because rocket stoves burn fuel so efficiently, they can also produce carbon monoxide (CO). CO is a colorless, odorless gas that can be deadly if inhaled in large quantities. For this reason, it's important to make sure your rocket stove is properly ventilated before using it indoors.