A simple Google search will show that the "CDC admits that COVID-19 positive test is caused by the common cold" is not found anywhere but on the intellihub conspiracy site.
A positive test result shows you may have antibodies from an infection with the virus that causes COVID-19. However, there is a chance a positive result means that you have antibodies from an infection with a virus from the same family of viruses (called coronaviruses), such as the one that causes the common cold.