Nitrous oxide Nitrous oxide Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula . At room temperature, it is a colourless non-flammable gas, with a slight metallic scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidizer similar to molecular oxygen. It is soluble in water. Nitrous oxide has significant medical uses, especially in surgery and dentistry, for its anaesthetic and pain reducing effects. Its name "laughing gas", coined by Humphry Davy, is due to the euphoric effects upon inhaling it, a property that has led to its recreational
The House with Laughing Windows of the giallo." The House with Laughing Windows The House with Laughing Windows () is a 1976 Italian "giallo" film co-written and directed by Pupi Avati. The film was shot in Lido degli Scacchi in the Ferrara province of the Emilia-Romagna region in northern Italy. Stefano (Lino Capolicchio) arrives in a village of the Valli di Comacchio area where he has been employed to restore a fresco depicting what appears to be the martyring of Saint Sebastian, which has been painted on a rotting wall of the local church by a mysterious, long-dead artist. While temporarily taking up residence in