Kartik, with all due regards, there can be an error in the pedigree database of image posting as so many images are posted so keeping a track on all is not possible. When a dog enters the ring, the registration of the dog can be checked..and is suspicion arises, the dog's chip can be scanned and the reg. no can be looked up in the KCI database to find the authentic date of birth of a dog. The judges of such shows are not mere paupers who turn up to judge such events; they are certified people with a reputation to maintain. They would obviously see which dog is entering.
As with your smoking concern, i would strongly recommend you talking with the local police, as it is their jurisdiction. LOL. Had it come in the notice of any KCI official, the handlers would have definitely been asked to stop smoking then and there itself.
Hope your doubts are cleared. Dont hesitate to reply back in case there is anything else.