think you need to study up on if "it" can even accurately be identified in any test out there and if "it" even exists. colds, flu, coronaviruses have been around forever and we aren't likely to "cure" them. or natural system is designed to fight these off on the regular

you also might want to research transmissibility studies. there was at least one done for example around the Spanish flu and as much as they tried they could get any to "catch" it even with blood transfusion, ingesting coughed up phlegm, talking for a long stretch literally face to face, exchanging full breaths in a mouth to mouth manner, etc