Montego classic dog food smells like feces and causes diarrhoea

We changed from an expensive brand to Montego classic for our 2 dutchies, after reading from someone on the internet about Montego. On opening the pack of Montego we noticed that it literally smelled like feces. We thought that this could be due to the type of meat they use to manufacture the Montego and proceeded with the change over process. About 5 days into the change my dogs started getting running stomachs, could not hold the diarrhoea in any more etc. Nothing else changed in the care of the dogs only the food. We should have checked Hallo Peter first before purchasing Montego dog food, there are many many of complaints about Montego affecting pet health. DO NOT feed your dog Montego Pet Nutrition brand.