In adults, the most common way in which molluscum contagiosum is transmitted is through sexual contact. If I get molluscum contagiosum, how long will I be infectious? As this is not known for certain, you should assume that you are infectious as long as you still have the virus. Can molluscum contagiosum lead to cancer? No. Molluscum contagiosum is benign (non-cancerous). How do I get rid of molluscum contagiosum? Usually, in cases of people with normal immune systems, molluscum contagiosum disappears by itself. In more extreme cases, medical treatment may be required.