Malign Mirror

[Porter]

I have tried to find an answer for this on the FAQ and forums to no avail.

The text on Malign Mirror says that you may not get a bonus from items other than armour for your next combat. And an item such as Spiked Knees says '+1 Bonus' on the top, and I belive all of the equipable items (save kneepads of allure) follow the same formula. (as it stands right now I only have the base Munchkin game, althought that will change in a few hours) Items such as the freezing potion do not say 'bonus' anywhere. So, my question is does M-Mirror dissalow me from using items such as potions in the next combat? Because, due to what I am led to belive a 'freezing potion' is, even though the card says '+3 to either side' I belive it is not so much a bonus to me as a penalty to the other side.

This then leads me to my next question, what if someone else throws the potion on the monster? What if someone else throws the potion on me?