Damaged magsafe charger still working (light glows even when not plugged into MBP) - safe to use?

Question

Hello,
This is going to sound ridiculous but i accidentally let the end of magsafe 85w charge fall into a bowl with some melted ice cream left in it..... i didn't notice at first until i saw it lying with the charging light glowing despite not being connected to the macbook. i turned it off at the mains and cleaned it out as best i could with a q-tip and a toothbrush to try and get away any excess - there still appears to be some balck residue around the pins, im not sure if this is from the ice cream, or something to do with the electronics being fried in some way.
Anyway, apart from an occasion when i was cleaning it and there was a small spark and a very small stream of smoke (almost unnoticeable) as I initially forgot to unplug it from the mains , it seems to be working somewhat normally again. it charges my macbook and the light turns off when its disconnected but it changes from orange to green randomly sometimes when it is connected.
My main question is, is this dangerous to my macbook to use in this state and if so how? i intend to replace it eventually regardless but at the moment i cant afford to pay the steep £65 price tag for a new charger.
i understand that the charger may eventually stop working but i dont want it to short out my macbook or something - apologies if any of the steps taken above seem idiotic, i really dont know what im doing in the area of fried electronics.....
thanks for any help.

Answer 1

So long as the charger is NOT connected to a AC wall outlet, soaking it in penetrating oil will not harm it. 
mattmackay wrote:
is the electronics cleaner you are referring to the kind that uses a straw to expel pressurised air into the device to clean it?
Some do come in that configuration but I doubt that you can use the 'pressure' to your advantage.  The objective is to get the liquid behind the pins and I think you can only do that by soaking it in a container that  is well sealed.  The liquid otherwise will evaporate quickly.
Understand that this is what I would try to do if I were well up the Amazon River with no other alternative.  A new charger guarantees that it will work.  This may not.
Ciao.