What does it feel like to be put on laughing gas?

Pleasant and comfort: It varies somewhat from person to person, but nitrous oxide generally makes people feel less pain and also less anxious or inhibited. It is dangerous if the concentration gets above about 70% because it may lower the oxygen level in the blood. When mixed with oxygen and administered by a trained professional, it is safe and effective. The biggest side effect is some potential nausea after its use.

Laughing gas: Laughing gas or nitrous oxide is a commonly used anesthetic gas. Most frequently used in dental office's it has a very rapid onset and offset and has beneficial analgesic properties that may it useful for use in such settings. While it has many physiologic effects, the primary effect noted by patient's is a mild to moderate euphoria.

Relaxing for most: Laughing gas, or nitrous oxide, is commonly used in dentistry as a safe and efficient way to provide anxiolysis for apprehensive or nervous patients. It won't render you unconscious, so you will be fully awake and "present". Most patients feel more relaxed and at ease, they feel "light", some feel slight tingle in hands and toes but nothing uncomfortable. Few report nausea with higher levels.

Numbed senses +: Relaxed, calm, happy, "floating", etc. Most patients love it. Some can even forgo local anesthesia with it, especially kids.

Different sensations: The effects of nitrous oxide/oxygen or laughing gas affects people in different ways. Some patients report tingling in the fingers and toes and a sensation of floating, others may report feeling very heavy, while some patients say they feel no different than before the nitrous was administered.