>>21. if a dog has no nose it has no ability to smell odors properly.
2. there is a possibility, that this noseless dog is dead and is decomposing, so it itself doesn't smell good. A pun on the English "smell."
Now there is a local meme, when one guy bought a dog and named it Haskell (after his favorite programming language). The dog has immediately went dead, like the language itself, despite all the best expectations. That guy still keeps the corpse, but the dog doesn't smell well.