C3904 Highly Toxic Fog

"No, the death rate of this kind of poisonous smoke is not high. The main reason is to choke people and make them lose their ability to move …" Of course, if you keep choking him for two to three hours, he'll probably choke people to death! "

"But that won't do. We will control the entire operation within 40 minutes. Once the operation is over, we will immediately retreat …" "Aunt Thirteen