Food Safety Report: Migros-Supermarkt - Zürich - HB Sihlquai, Sihlpassage, Zürich, Schweiz 1 year ago • details 20 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps Suspected source: Popcorn, mental stress Onset: Not sure Duration: 4 to 12 hours Sick: 2 people