radiator smell no leaks

If you smell coolant, the you have a leak that you haven't found yet. You will have to pressure test the system.

Had someone take off manifold cover could not find and leaks, was squeezing large radiator hose, now my check engine light is on and running very rough.... any suggestions???

Yes, the same one I gave you in the first place. pressure test the cooling system.

Also check the car after its cooled off around the spark plugs for any kind of discoloration from what would look like water or oil on the side of the motor. If so you have a small leak that's getting into your spark plugs. Could be your cause for rough running. And i got bad news as well. If u can't find a leak and your losing a decent ammount of radiator fluid, u may very well have a blown head gasket. Which is very costly to repair.