Have you ever saw a fly suddenly land on your food? You must know that the food infested with flies is not healthy to eat.

Recent research has found that flies are likely to carry more harmful diseases of the bacteria than we can imagine. Researchers from Pennsylvania State University, Singapore's Nanyang Technological University and the Federal University of Rio de Janeiro studied microbiology at 116 homes and flies worldwide.

The study, published in Scientific Reports, found that ordinary flies carry hundreds of different bacteria in their legs and wings, which they find in various dirty and dirty places, and can easily move where they alight, including food.

Flies carry many unexpected bacteria that can cause disease. Stephan Schuster, one of the researchers, said: "Their legs and wings have a great variety of bacteria that can easily spread in food and enter the body when you eat."

Even if you warm the food back, it's still possible that some bacteria are still alive. That's why, rather than taking the obvious risks, it's better to avoid foods that have been flooded or to avoid food sold in stalls in an open state.