I really wish those traps would be outlawed. :/
Anyway, yeah, I'd look to rattlesnake avoidance training as the model to follow.
The problem -- and the reason I think this approach may be a lot less effective with conibear traps -- is that a rattlesnake is a very distinctive creature that is not inherently enticing. In fact, many dogs are wary of them even before aversion training.
A conibear trap might just look like a bucket with some salmon in it, and I'd be concerned about the effectiveness of the training when the traps are variable (different setups, different people's scents on them, etc.), the baits are variable, and it's much MUCH harder for the dog to generalize that "this is the real danger, this is what I need to avoid" vs. creating a superstitious avoidance of salmon or buckets.
I don't have a better alternative to suggest and if I were in your place I would give serious consideration to doing the aversion training anyway. But truthfully I am not optimistic about its benefits, because my suspicion is that this particular danger would be quite difficult for a dog to recognize and comprehend. After all, the whole point of the trap is to lure animals in and fool them into thinking there's no danger.
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