Toyota Repair: Smoke Coming out of A/C vent, toyota avalon, toyota dealer

Question
HI I have just purchased a 2001 toyota avalon XL, it runs fine but recently today while i was driving I had my A/C on and smoke started to blow through the vents at which i immediately turned it off, took to the nearest autozone and was told all fluids were in perfect order but advised to not turn and run A/c untill i had gotten to local dealership for checkup, any suggestions as to what cause was or could be?

Answer
What you are seeing is not smoke, it's moisture that is freezing at the evaporator and being blown out the vents, I would highly recommend that the toyota dealer diagnose this problem, it involves connecting some pressure gauges to the system to diagnose what may be wrong, for some reason it sounds like the evaporator is icing up.