oil smells like antifreeze on 2004 Chevrolet Silverado 1500

oil smells like antifreeze

Asked by for the 2004 Chevrolet Silverado 1500
Has this engine overheated recently? Could be first signs of coolant in oil indicating head gasket problems. May not have milky oil yet. Head gasket failure is almost always from something that causes it and not just random. Typically overheat. If end up doing head gaskets for repair make sure to monitor on restart and verify cooling system operation.
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besides the smell what does the oil look like ?? it should be brown with no milky looking substance in it.
we compared the oil to another truck and looks the same. truck has heavy blue smoke on cold start and is ticking