With the ingestion of spoiled milk, a case of food poisoning is the likely outcome. A bacterium causes food poisoning. Some of the likely culprits include listeria, salmonella, campylobacter and e-coli.
Proper preparation, cooking and storage of food greatly reduces the likelihood of food poisoning. Contaminated food does not look, taste or smell bad in every case. Cases of food poisons vary in severity.
Symptoms of food poisoning and stomach flu mimic each other but they have different sources. Stomach flu is a viral infection where food poisoning is poisoning from food born bacteria. Both maladies share the symptoms of stomach pains, diarrhea, vomiting and nausea.