After drinking the bottle for fun, white bugs appeared in a few days. What is the reason?

The fresh milk must be bad. Generally, it is best to use milk immediately after unpacking, which can keep fresh, but it should not be kept for too long. There are a lot of bacteria and microorganisms in the air that are invisible to the naked eye. At the moment of opening the package, countless fungi have come in. You're sure to grow bugs or something these days.