Yeah, I agree, the same problem was with Hitman 2. Unlimited Items do not work for things that "Disappear/Explode": Grenades, EMP, etc.
It works only for things that can be re-used, picked up again: Crowbars, wrenches, etc.
Yes, if unlimited items do work for explosives then it would create a whole lot of new scenarios and vastly open up of new way to create "chaos". This would be the most valuable option of the entire game.
As for the unlimited item for syringes, that item is still there but it just doesn't work any more, like I silently inject poison and the AI still react with animation but then nothing happen.
[Edited by Angel Face, 2/1/2021 9:39:52 AM]