RE: campfire smell
When we hunt and camp, I'll usually bring a hot shower. You leave the bag in the sun during the day and the water inside gets pretty hot. But then again, you need a water source. If the water is not too clean, you may want to bring a purifier. As far as smoke smell. I'd personally wouldn't worry too much about it. I'd worry more about human oder. And I like you would want to have a fire going.