Elim Garak planned to execute Intendant Kira Nerys with a concentrated dose of ulcartic virus in 2375, but when Regent Worf spared her life, Garak planned to use it on Zek, Quark, and Rom instead. However, Ezri Tigan got the drop on Garak and injected him with his own hypospray, killing him. (DS9: "The Emperor's New Cloak")