From what we've been told, Black Ops 6 will attempt to explore a nuanced narrative of the Gulf War, with a critical focus on different participants within the conflict. It will dovetail into the end of the Cold War era, and explore some of the consequences therein, Corden wrote.
The Nova 6 gas in Call of Duty: Black Ops is a fictional chemical weapon, so there is no real-world equivalent or composition for it. The game's creators designed it as a deadly nerve agent with devastating effects. If you have any other questions about chemical compounds or fictional substances, feel free to ask!