Laughing Gas (Nitrous Oxide) is a gas that has no colour, no odor and will not irritate. It is breathed in through the nose causes a pleasurable feeling. To begin, administration of laughing gas will result in an overall feeling of lightheadedness and then will cause a tingling sensation followed by a feeling of floating. Some patients have also said that they get warm sensations and tingling up and down their arms and legs. Laughing gas is an excellent option for patients