Man Starts Talking in 'Demonic Tongues' After Inhaling 'Satan Gas' On 4/30/21 at 10:59 AM EDT While we're all familiar with making our voices go high-pitched at a birthday party after grabbing a helium balloon, one man has demonstrated the opposite effect. His abnormally low tone has seen him compared to something demonic, with people branding the substances "Satan" gas. Cody's minute-long clip on YouTube was captioned "Breathing The Heaviest Non Toxic Gas," which has since gone viral after being shared to Reddit. He explained: "I breath in samples of sulfur hexafluoride and perfluorobutane which has nearly twice the density. [sic]." Cody inhales the first gas from a balloon, saying: "This is sulfur hexafluoride, otherwise known as the deep voice gas."