Ah! I'm a glass tank fan, so I don't have stacking cages: my BCI (like many of my current snakes- large rat snakes+) was very aware when I was feeding snakes, & many others have noticed this too...that their snakes pick up on the scent. I think as long as you have stacking cages (or any other cage in close proximity to your boa) you may have this problem. Most snakes have extremely acute sense of smell...only a few molecules need to get picked up with their tongue flicks for them to identify & get excited. You'll likely be trying to feed your BP far more often than is good for your boa...I think you should reconsider the BP's location (or the boa's).