Help creating AF work for commercial

I have a project I am working on need After effects help. I will supply footage will just need AF work added to the scene. Will be about 10 to 20 sec worth of footage.


Scene 1
Hunter walking through the woods as he walks and shoes touch the ground i need a scent trail added to the ground and smoke style scent being dispersed into the air.

Scene 2
Deer with his nose in the air as the scent travels through the air into his nose.