[murphyv310]

Don't condemn the head gasket.
If the car has been sitting and not used for some time and it was fine previously I would look elsewhere first.
The inlet manifold gasket is a good point but examining the plugs would be my first thing to do, look for rust on the end of the threaded part and for oil contamination also for one or two that are unusually clean.
Report back once you have done these checks.

One other thing is the engine coolant sensor may be duff giving a very low reading (check on the on board diagnostics) there just might be too much fuel if the ECU thinks it is very cold and the rich mixture could be the fuel smell and smoke. May even be flooded.