Food Safety Report: Osmow's Shawarma, 1166 St Clair Ave W, Toronto, ON M6E 1B3, Canada 1 year ago • details 20 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Stomach Pain, Cramps Suspected source: Osmow's Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: Me Additional information: Not the first time this has happened, same location.