Nitrous oxide, a.k.a. laughing gas, is an anesthetic chemical compound with medical uses in surgery and dentistry. It is used as a recreational drug and has been used as a Connection Supplement by Osho and American psychologist William James.
- Milne, H. (2015). Bhagwan: The God That Failed. Kindle Edition
- Huston, S. (2000). Cleansing the Doors of Perception. Boulder, CO: Sentient Publications.