Also called
nerve gasses (probably because they're distributed as a
gas), these
kill or
disable their victims by inhibiting the body's ability to send
nerve signals from one part to the other. They tend to cause quite
violent deaths, making the
muscles spasm all at once.
These have advantages over traditional
poison gasses in that many of them can surpass a simple
gas mask. The most
potent nerve gasses can cause their effects by contact with any
exposed skin, making fully sealed
biohazard suits important for
surviving them.