Last year, I pulled in two black bear with a honey smoker. I used a sterno can as my fuel source. They came within about 150 yards, but I couldn't get a good kill shot as they kept playing the "stand up, drop down" game. When I was speaking with a friend recently and describing the scenario, I was told that the sterno fuel gives off a detectable odor, and that they probably tried to check me out from afar because of this.
Is there any truth to this? I'm specifically wondering if animals can detect a scent from the sterno, and if so, what might be a good alternative fuel source to use?