Answer by Darthdoggy. Confidence votes 342. if its spoiled, it has bad bacteria in/on it, which will probably make you sick. but if you boil it in boiling water for at least 10 minutes, that should kill anything.(but still, eew).f the greens are not too spoiled to make a person sick, the dog  will probably be okay too. Overall though, feeding your dog spoiled  food is a bad practice. Bacteria can m … ake them sick too.