“I read once that a dog’s sense of smell is 10,000 to 100,000 more sensitive than a humans, and even more in some breeds.”
With few exceptions (i.e., bloodhounds), a cat’s sense of smell is 2x more sensitive than a dog’s sense of smell: https://www.catster.com/lifestyle/is-cats-sense-of-smell-stronger-than-dogs/
I believe it but I just can’t imagine a service cat, lol. I do love my cat too, tho