Sushi, fish & chips and gravlax are some of our favorite dishes. But what if one day you wake up, and you can't eat fish anymore?  Xinfadi, Beijing's largest food market, was shut down after the coronavirus was found on a chopping board cutting up imported salmon, sparking questions on whether the fish can spread the virus. Pneumonia is a disease that attacks the lungs, but salmon, as we know, do not even have lungs. Is it true that fish can carry the coronavirus?