I probably saw many such optimistic flies at one tiny Black Sea resort where there were only two public canteens, the cuisine of which was so terrible and toxic that none of my family members could touch the food, which was difficult to even call food, not a culinary creation. We had to have a barbecue every day so as not to be hungry lol. But, in those canteens there were a huge number of flies that were not going to die after landing on toxic cutlets and toxic soup.

But, I must note that around us, at other tables, there were no less tenacious visitors to tourist bases, who, like flies, could eat this with pleasure and did not die immediately ... I don’t know what happened to them later, I was not engaged in statistics then and did not ring them like rare birds. :) !BEER !DIY