Why would you want to do that? Who would even want to take a chance, unless they are immune to it? Doesn't seem like a very good idea, to me.
I understand your concern but I find using this as camo is no worse than using fake hornets nests or fake snakes. Poking a hornets nest or a snake to find out if it is a cache or not seems more dangerous than poking an ammo box with Ivy camo.