How do you set orientation attenuation for the camera? (not a world object)

Question

Hello. The wwise courses demonstrate how to set orientation attenuation for game objects, but how can I do it for the player camera?

I have an object in the game (a smoking flare) and I want it to be attenuated when you are facing away from it. The object itself doesn't have a 'facing direction' because its just smoke that goes up into the air. So how can I set the attentuation to be based off where the game camera is oriented?