A sneeze guard is the transparent screen fitted over self-service food displays, salad bars, and deli counters to protect the food from contamination, the same device as a counter guard. Positioned between customers and the open food, it blocks droplets from coughs, sneezes, and conversation while still allowing the food to be seen and served. Food hygiene regulations in many jurisdictions require them wherever the public serves itself from open displays. Effective guards are angled and positioned to cover the food zone fully, made of easily cleaned materials, and combined with serving utensils and temperature control. They are a simple, visible piece of food safety engineering that became familiar to everyone during the pandemic years.