The term "gas chamber" refers to a device used to execute people by exposing them to poisonous gases. Unfortunately, there are a number of synonyms for this gruesome device. Some of the more common synonyms include the lethal injection chamber, the cyanide capsule container, and the carbon monoxide chamber. Other possible alternatives include the hydrogen sulfide chamber, the nitrogen oxide apparatus, and the halothane inhalation device. Regardless of the specific term used, these are all sinister devices that have been used throughout history to carry out executions. As such, they serve as a stark reminder of the dangers of unchecked power and brutality.