I made a test on the game, trap NPC and use tear gas and toxic gas on them, it seem they are immune the gas, whatever wearing the gas protection clothes or not
that make something weird, because tear gas was desige to drive people out, but for now, It was uesless to NPC, but PC are still affect with those thing, that just unfair
I wish the tear gas and toxic gas will have a lot effect to helping PC against those NPC enemy, making this weapon elements became are powerful weapon to human enemy.