I did exactly the same thing a few years ago
I heard a nasty hissing noise and rang the (then) electricity board to ask
a) what I'd done and
b) what I should do.
The nice lady on the phone said I should
a) open all the doors and windows
b) not light any naked flames
c) try not to breath in too much
d) go outside until the hissing stopped
e) take the fridge to the tip
f) buy a new fridge &
g) not sunbathe in the garden for a year or two as I'd personally destroyed the ozone layer over my house.
The good news was that I claimed on the insurance for the fridge under accidental damage as I sure as hell didn't deliberately stab it to death and they paid out
