Sniffing out Disease?

It has now been claimed that dogs can be trained to sniff out whether a patient has malaria by giving them access to the individual's worn socks (https://www.medicalnewstoday.com/articles/323501.php). This, along with the observation that they can also identify men with prostate cancer, suggests that sniffer dogs (although they are not cheap to train) might well replace some of the high-priced electronic analytical equipment in our hospitals.