I hate to be the bearer of bad news but the last time I had a problem like that it was a cracked head. After the engine warmed up it would not smoke but everytime it sat until it was cold and restarted I got a lot of white smoke out one side of the exhaust. Mine didn't give off a sweet smell either. The crack was so slight that when the engine warmed up the leak was practically negligible. It would also miss on one cylinder at idle but fired on all cylinders after it warmed up. It could also be a bad head gasket or a cracked block. I noticed you live in North Dakota. I assume you had plenty of antifreeze in it for the winter...