Smell the dipstick, too. If you smell more than a trace of gasoline (after all - the car DOES run on gasoline!) , fuel is getting into the crankcase. Not good. Boy howdy, did the oil I drained from my engine reek of gasoline!! Thank goodness, I couldn't get the engine started! The bearings would have been ruined and there might possibly have been a fire or even an explosion with that much fuel in the crankcase to the point that it was overflowing. YIKES!!! If in doubt, drain the oil and start over. A Model A oil change costs about $30. A new engine rebuild costs thousands. Take your pick.
Marshall