There's a world of difference between a dog with a good nose and one that also had early experience that taught the importance of using it well. What happens next depends upon breed. If it's a beagle, I'll get elaborate with trails. And I'll switch to bottled scent on a pad, which I then cast with a fishing rod to eliminate my scent from the trail. A somewhat scented treat will be at trail's end.
Coonhounds can be different.
Coon scent inspired little interest after that. A better way is to scent an old coon hide and let the pup, or a whole litter, run behind, biting and fighting the hide as you drag it along with a rope. Then rub its scent on a tree, throw the rope over a limb and pull it above their heads. Jerk and jiggle it to inspire jumping and barking. I continue relatively simple trails for retriever or pointer pups.