Top 2 in Top 12 Code of Conduct on Vietnamese dining tables.
When you taste a spicy dish and have a mark, the flu is not over yet, sneezing is an inevitable one. But if you are facing the table and you are a little sneezing, this action is incredibly vulgar.
You need to pay attention to the feel of the opposite person and sneeze as discreetly as possible to avoid having people feel unsanitary when you are on a meal.