Keela was never trained to alert to cadaver scent, so how could she be deemed to have failed to alert to it? She was trained to alert to blood only. Eddie on the other hand was trained to alert to both blood and cadaver scent only. Neither dogs were trained to alert to anything else so when they alerted it will only ever be to what they were trained to alert to and nothing else. Both dogs were deconditioned to alert to any other bodily fluids such as semen, urine etc unless they were mixed with blood. They were used in tandem as a fail safe method of determining what was being alerted to. Using two dogs, both who were trained to alert to blood and one who was trained to alert to cadaver scent made that possible. If Eddie was to alert, Martin would know that he had alerted to either blood or cadaver scent or both as they were the only two things he was trained for but would need to deploy Keela to validate Eddies alert. As Keela only alerted to blood, if she did not also alert then it would mean that as per his training Eddie was only alerting to the other scent he was trained to detect i.e. cadaver scent. If Keela also alerted to the same item/location as Eddie then the alerts would only be attributed to blood as Keela was not trained to detect cadaver scent. Legally a blood alert is the only alert that authorities can accept as it can be proven what it is the dogs alerted to. Where Keela does not alert but Eddie does alert Martin knows that = cadaver scent as that's what the dog was trained to detect but of course he cannot legally state that. It is up to police to identify any corroborative evidence to prove that Eddie was indeed alerting to where a body or body part had been, which is why Martin can only state that it is 'suggestive' of cadaver scent until either a body or other forensic corroborative evidence explaining the alert is found.
There you are john...serendipity..who you have endorsed...is sating grime KNOWS the alert is cadaver scent....rather different to grime's official statement