The smell of delicious food cooking, how much does that prepare you to eat? And without sense of smell, you’d only have the five basic tastes your taste buds provide, sweet, sour, salty, bitter and umami. Imagine how bland food would taste and how much sensual pleasure would be gone from sharing good food with great company.
The subtle body smell of the one you love, human but uniquely their human scent. I’d feel so robbed if I lost that. And the smell of sexual excitement when making love. That, more than anything else in the act, is what fires my passion.