If you lost one of your senses...

[Momiji]

Smell is pretty much worthless for the most part. BYE BYE!

I would beg to differ. Smell is important in taste, and also in making sure food is safe to eat. It also is an alert system to tell you if something is burning, or if there is a gas leak or something-- and that's just to name a few things!

Human smell is actually terrible compared to EVERY OTHER MAMMAL ON THE PLANET.
Nothing that owning a dog, and having common sense can't fix.

Who cares if it's worse than other mammals? It's still our most primal/instinctive sense, and it's also the only sense that does not pass through the thalamus in the brain, so it's the first sense to stimulate the brain. All other sensations pass through the thalamus, the brain's 'relay center', and sent as impulses to their proper locations in the cerebral cortex.


Not only that, but without the olfactory sense, your vomeronasal organ would also not work. That is the primary organ responsible for detecting pheromones that regulate behaviors like mating, territoriality, and aggressiveness. Now, while it is true that this is not as important to us as it is to other mammals, it still plays a role in human sexuality. Also, as I said before, without smell, your sense of taste wouldn't be very good either. Why give up two senses when you can lose one that can be beneficial to you in the long run? Also, smells also stimulate the memory more than other senses.