A low, flat, white building in rural Buckinghamshire would seem an unlikely spot to develop an early warning test for deadly malaria. The building is home to Medical Detection Dogs, a charity set up in 2008 to harness the animals' extraordinary sense of smell to detect disease in humans. Dogs trained by the charity have already proved their worth as medical alert assistance dogs, helping their owners manage conditions such as type 1 diabetes by detecting odour changes linked to low or high blood sugar levels and then alerting them. Medical Detection Dogs harnesses the animals' extraordinary sense of smell...