Well thats Bull, they smell and make your house smell if your a dirty skank and dont hoover or wash the poor animal
The same as people, if you dont clean up, or wash, you make the house smell
I've never visited a house with dogs that doesn't stink of dogs. You not being aware of your own house smell is completely normal, because, its normal to you. Go in someone elses house, well, all houses have a smell, dog houses are worse than most. Cat houses smell also, but I've yet to find a house with cats that smell as bad as a house with dogs...... though I don't know any cat lady's, fairly sure a house with 30 cats in would be rank.
As for cats being useless, the reasoning Fox gave was ridiculous, eat, feed, play, and go off on their own and crap in other peoples gardens.
The first few are identical to dogs except, dogs have to be accompanied, you have to take them for walks and you have to pick up their crap.
Cats, you get all the best bits, entertaining, chasing laser pen lights, random play fighting with other cats thats hilarious, climbing up things and being generally funny, and none of the bad stuff. Look after themselves in terms of attention, walking, being out and you don't have to clean up after they crap.
Dog's are just cats, plus you pick up their turds. I'm sure theres a joke in a film I can't remember. Aliens would think dogs ran the planets as humans walk around behind them picking up their crap.
EDIT:_ RSPCA are fine by the way and the right people to go to, RSPB are tiny in comparison and aren't available everywhere. We had a baby magpie cat incident yesterday, RSPCA gave us number of a wildlife group who collect injured birds and take them to a sacturary to be looked after and live in if they survive.