Gas gangrene wani yanayi ne na likita da ke haifar da kamuwa da cuta wanda ke haifar da iskar gas a cikin kyallen takarda, wanda ke haifar da mutuwa da lalacewa. Wani nau'in gangrene ne mai tsanani kuma mai yuwuwar yin barazana ga rayuwa. Kalmar “Gas” tana nufin cewa ƙwayoyin cuta da ke cikin wannan yanayin suna samar da iskar gas kamar methane da hydrogen, wanda zai iya haifar da kumburin kyallen jikin jikin da kuma canza launin. Alamomin gangrene na iskar gas sun haɗa da ciwo mai tsanani, kumburi, zazzaɓi, da samar da ƙamshi mai ƙamshi. Jiyya yawanci ya ƙunshi kulawar likita nan da nan, gami da yin amfani da maganin rigakafi, ɓata aikin tiyata don cire matattu nama, da kuma hyperbaric oxygen far don ƙara yawan iskar oxygen a cikin kyallen da abin ya shafa.