What we are calling a virus, is actually the cells in your body producing Exosomes to remove dead cells and toxins. The elimination of toxic matter from the body creates symptoms, which we have been taught to believe is a cold or a flu. The human body purges toxins and dead cells at the same time the weather changes from hot to cold, just like when the trees know when to shed their leaves. Research Antoine Bechamp and his terrain model. Germ theory is a hoax, there is no such thing as a contagious virus.