I am unfamiliar with a Buick
Lucent. Is this in the United States?
Smelling anti freeze means there is an external leak somewhere. You may need to do a cooling system pressure test and look for the leak. Water pump, intake gasket, hoses, radiator... A pressure test may not be conclusive though. Sometimes water pumps only leak when they are in one particular place or after it cools down. So for that leak you may have to look for staining where you can see where collant has leaked over time but may be dry when you check it now.