The real problem is replicating our olfactory system. It can detect millions of compounds (even undiscovered and new) and we still have competing theories on ho

The real problem is replicating our olfactory system. It can detect millions of compounds (even undiscovered and new) and we still have competing theories on how it works. One involves quantum mechanics[1], which is very hard to replicate with our current level of manufacturing. [1]: http://www.bbc.com/news/science-environment-12827893 http://www.bbc.com/news/science-environment-12827893