I sense the pangs of an expectant new Mum...
Try not to worry. You won't be able to completely rid the house of Bob's smell. It'll be on things for yonks.... Christmas stuff, that old towel that you hate but is too good to through out, the cupboard under the stairs, your husband's fishing gear... To completely sanitise your home of any odours is impracticle. It'll just be one of those things that new puddy has to get used to.
If it helps to pass the time, and take your mind off things, why not go out and choose new food bowls, a blanket, perhaps a few new toys...?
And we best get pics of this new puss at soon as it arrives.