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rattling coming from engine with small leak on 2006 Ford Taurus

I have a 2006 for taurus with a transverse mounted V6. I have been getting a mettallic rattling from the area around the serpentine belt, with some fluid leaking/dripping from the area near the lower pulley. It's been whipping off the pulley system and onto the firewall, frame and the exhaust pipes, burning with a sweet smell with no smoke. I did a 'color test' but dabbing some onto a white paper towel and then 'sampling' the car's fluids but I cant tell what it is by sight or smell. (I dont wanna do a taste test!)
I'm looking for some suggestions as what to do - this car has 80k miles on it, and I drive 70 miles a day round trip to go to school so I can't have too much down time on it. I'm ok working on it as long as it's not too in depth - Chilton's is my bible, but they dont have one out for this model yet.
Any help is greatly appreciated!

Asked by for the 2006 Ford Taurus
The sweet smell is most likely coolant. You should check for a cooling system leak, possibly from your water pump which would explain why it is being slung on to the firewall.
I have same problem but no leaking. Could it be my AC pulley? Tested the belt tension and the AC pulley seams to be a little loose. What happens if this goes out?