Your ability to recognise faces, you surely realise, was passed down to you genetically? It’s encoded as hardware priors in the structure of your brain. So it’s

Your ability to recognise faces, you surely realise, was passed down to you genetically? It’s encoded as hardware priors in the structure of your brain. So it’s not too hard to extend that to knowledge of a smell, similarly hardcoded somewhere. I’m not defending the original paper btw, which seems to have some faults.