Food Safety Report: Hershey Syrup, Westfield, MA, USA 1 year ago • details 16 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills Suspected source: the bad Hershey syrup I had Onset: Less than 4 hours Duration: 4 to 12 hours Sick: 2 people