A photo of a woman eating a meal has gotten people talking in South Korea after going viral online. The woman was seen sitting down with dishes on her lap, eating boiled pork, kimchi, and even a bowl of soup. But what surprised people wasn't the food the woman was eating — it was where she was eating it, because the picture was taken on a subway train in Seoul. According to data from Seoul Metro, nearly 4,200 complaints about people eating food and drinking on the subway have been made over the last five years. People mentioned other passengers eating food with strong smells, such as blood sausage, kimchi, dried squid and cup noodles. In their complaints, some people said the smells made them feel sick. Others said they saw passengers drinking alcohol on the train, such as beer or soju. In South Korea, eating or drinking on public transport is seen as rude. In fact, Seoul banned food and drink on city buses in 2018. But on the subway, the situation is less clear. Seoul Metro's rules say that passengers are not allowed to bring anything onto the train that is unsanitary, or that causes discomfort to other passengers because of its strong smell. But some complaints said that people kept eating, even after listening to train announcements asking them not to do so. Now, some officials say it might be time to make clearer rules for the subway, just like the ones used for buses. And with the large number of complaints being made each year, the city could soon decide to just ban all food and drink on trains.