(5) And cats don't smell, not unless they are ill. Exuding no odor is just one way how nature made felines one of the best hunters on the planet, which is why they also bury their waste, the only animal that does.
In feral cat colonies, subordinate cats cover their waste, while dominant ferals leave it conspicuously uncovered. Most indoor cats bury their waste, possibly to display subordination to their humans. Sometimes in multi-cat households, however, the dominant cat will leave waste uncovered to indicate his status.
Shelly is our group's version of Ruppert Murdock's Fox News. The more you listen to him, the less you know.