...that Charles can't blame his farts on the dog (or cats), because I can tell who did what by each fart's distinct odor?

I do have an amazing sense of smell, which I would gladly trade for a keen sense of pretty much anything else, so maybe it's not completely normal that I can pinpoint every fart down to the exact colon that produced it. A smart nose is what I got instead of good vision. Without contacts or glasses I can get around okay in my own house, and recognize pets by the color of their blob and the way their blob moves around, and I know that Charles is always the tall blob, but if I was dropped outside in say, the back yard, and had to find my way home, I don't think I could do it. Blind as a bat, I am, but I can sniff out a fart like nobody's business. Sometimes it's hard to count my blessings, there are so many.