Beautiful pack you have. My suggestion is to gradually make a very very small fire before you go camping and do something fun father away from it, so he relates it to something positive. Do that a few days, then slowly get a little closer but keeping it FUN ALWAYS. If you see him get scared, go further away, keeping it fun. DON'T force him...he needs to gain trust in you and when he's close to smoke it'll be fun. You want his camping trip to be just as fun as yours. Always leave off on a positive note with him and the smoke/fire. Is he a rescue? Maybe he was in a house fire. Just go slow. Trust is better than tranquilizers. Best of luck!