Sweet Smell where it should NOT be

Ok, I have been running the 95 for a while now and I have been smelling a "Sweet Smell where it should NOT be" outside the car after its been warmed up and idling, or just shut off. I have thought it was from the remaining coolant from the flush but its been 2 weeks since that and the smell is still hanging around. I am not sure if its coming out of the exhaust or where the source is.

I have already:
Pressure Tested it - Good
Flushed the new Radiator
checked for leaks under the hood.

The car does not overheat after the Flush.
When I changed the oil I did not see any water or coolant present.
There is no cloud out of the exhaust at all.
There is no lack of power.
No coolant loss.
It idles smooth.
When i run the heater there is no smell of coolant or rubber.

I heard someone say to remove a plug and start the car? What does this do and what kind of a mess will it cause?