Nitrous Oxide (N₂O) also called laughing gas, has a slight metallic taste but is basically tasteless and odorless. It has significant use in the medical industry thanks to its analgesic and anesthetic properties. Whether you are seeking pain relief during labor or just your basic local anesthetic for dental procedures, nitrous oxide helps to take the edge off the pain.
Nitrous is also used in rocket propulsion due to its the oxidizing effect at high temperatures. In racing automotive nitrous increases engine power by burning more fuel and producing greater power.