People's attitude to bacteria has tended to be negative during the years. However, not all bacteria are harmful. Bacteria and humans have a symbiotic relationship; it can cause serious health problems when the balance is broken. After long-term cleanliness pursuing, people started to find ways to live with these invisible residents. Through Bacteria Make Living (BML), trying to explore the hidden crisis that may be aggravated by the people's quest to keep distance from microbes in the world of the continuing rampage of infectious diseases and the desire for cleanliness.