Is the cold a cure for greater illnesses?

It was of great interest to see this idea supported in a recent 2019 study by Surrey University and Royal Surrey County Hospital in which it was said "Traditionally viruses have been associated with illness however in the right situation they can improve our overall health and wellbeing by destroying cancerous cells. Oncolytic viruses such as the coxsackievirus could transform the way we treat cancer and could signal a move away from more established treatments such as chemotherapy."