Dear Ubisoft,
Is obscuring smoke (grenades) on the list of things the devs are working on?
The concept seems to work in PVP and I imagine it should translate (with a little work) to handle the AI visibility mechanics that you have in the campaign.
Is this on the cards?
Technically it should be possible if all it does is to temporarily decrease enemy's range of sight and detection (with thick cloud of smoke that will hinder your view). I'm certainly positive they can make this rule. Though I'm also positively sure it will be wonky like flashbang on unalerted enemy where they would go into suspicion first before getting stunned. Sometimes even completely fail to stun them.