Poisoning Food/ Drinks while Sneaking

[granny]

I have noticed that you break from stealth if you attempt to poison food or drinks that are left on the ground.

Wouldn't it be interesting for it not to break or for there be a dex or reflex check to confirm if you are actually good at keeping yourself stealthed while doing it?

I mean, the possibilities of using poisons already challenge a lot our creativity to figure out fair, interesting and instigating solutions, but I guess that a skilled poisoner should not be so easily noticed while dripping a bit of nightshade leaves powder upon someone's else tea, would them?

[Octarine]

This is hard coded-ish. Using unique powers breaks stealth, but there might be some nwnx magic that can be done for it.

[Dredi]

At A guess I imagine you could have a PC tool for it:
2 stager, select item, select poison.

Not sure this SHOULD be possible however.