I'm under the impression that when it comes to smell you can never be TOO cautious. But if only one of the two works for you then that's cool too.
They would compliment each other. The best place for an ozone generator is not in the garden, it's in an area that you don't want smell, possibly in the outtake area of your ventilation (attic?). An Ozone generator will take the smell from your plants a bit.