My Westie has made a few puddles on the same area in the dining room and although I've cleaned this up with disinfectant now it has dried I am paranoid that it smells. What could I use to get rid of smells 100% on an old stain and also if he does this again what is the best thing to use? I'm scared my house may smell of dog.

biological washing powder gets rid of any trace on fresh smells, rather than mask the smell it gets shot of it altogether, I assume it would work on old stains too :)