. >> now resead lhers say docs can sniff the difference between healthy and cancer tissues. some studies say they are accurate as much is 95% of the time. >> imagine you have a way of saving people but you cannot tell them because if you tell themem they're either going to recount, yell at you or not want to know. i'm in an airport and he hits on somebody who is from korea and does not speak english. it's heartbreaking. you know it's something but how do you communicated. >> believe it or not why it is not the only star in the family. his sister savannah also has a stellar sniff. she runs a foundation, merlin's kids where she treats service docs for the disabled. >> you cannot train a dog to find every kind of cancer. so what i did was i decided instead of training a dog on individual smells i wasecaoing o trade my dog to find anything and alert on anything that was not a normal hd alan smell. >> you don't know what that is i know what it is. whoever is stocking the shelves and touch that and put it in or someone who came in and touched it. >> interested in learning more wes