Intake manifold bad smoke smell sweet?

when my intake manifold was bad in the winter id see a little mist and it smell sweet plus coolant loss so now its fixed but idk y but there like a thin light mist that comes out the oil and from the front of the manifold it was in back and front back stoped just front now what could it be plus i just flused the coolant its A 97 MALIBU V6 3100 SFI