Hello!

So I have another interesting idea. I want to make invisible walls with no collision. The idea is to make a smoke grenade. I want to make a lot of smoke and then place the walls to prevent Line of sight.

Anyone has done anything like that?

Placing an invisible wall to prevent line of sight? Well, if it's invisible you can see through it... so I'm not sure I know what you mean

Just create an imagespace modifier and apply it to the player. Quicker, cleaner, and... Makes more sense than an invisible wall.

Image space modifier wont solve my problem. I want to create a situation when NPCs cant see anything in given zone.

NPCs can detect the player through walls... So an invisible wall wouldn't solve your problem either.

If you want to make hostile npcs ignore you, you could perhaps change the aggression of every single npc who's involved temporarily and then stop combat for all of them? But it's probably not even that simple....

How about to put a spell on the enemies with the AbBlind MagicEffect?

@spookyfx

Yes, I can make them blind and I can make them invisible using trigger box. And once they leave the smoke I can remove the effect. In addition I cn make them and their targets stop combat. This should do. Not bad!

Glad I could help on this one. I messed around a lot with blindness in Oblivion but never had an idea on how to use it for a mod. I wish I had thought of camouflage smoke like you did!