Food Safety Report: Mellow Mushroom Atlanta - Buckhead, West Peachtree Street Northwest, Buckhead, Atlanta, GA, USA 1 year ago • details 34 Suspected food poisoning. Symptoms: Nausea, Vomiting, Cramps, Chills, Headache Suspected source: Mellow Mushroom Onset: 1 to 2 days Duration: 4 to 12 hours Sick: 2 people