Maybe I've always had a perk that defends against it, but I don't think I've ever been hit by poison by any gangoon. I get electricity hits and fire hits and kinetic hits, but I never get any indication that poison got me or a green cloud like the biohazard grenades. I'll get haptic feedback when I'm still getting burnt by fire w/fire burning me in the periphery of my "vison" but no poison that I could tell. Are there any enemies in particular who are known to use poison, and if not, why all the clothing mods etc that protect against it or Caterist cyberware?