2001 Saturn SL2 Losing small amount of coolant

Vehicle is losing a very small amount of coolant. Does not overheat and temp gauge is constant between a quarter and a half. Produces real good heat. Nothing noticeable under vehicle but can intermittently smell the coolant after driving. Had vehicle checked by my mechanic and they found a small leak at the intake. Anything to look for when replacing the intake gasket? Also, I just recently spoke with you in regards to a high idle and I am going to replace the coolant temp sensor. Can the coolant temp sensor be affected by the coolant leak at the manifold? Thanks for your time!!