Physical damage caused by Graphene Oxide:
Fig. 1 shows the antiviral effect of graphene oxide at noncytotoxic concentrations. Experiments have shown that GO inactivates the virus before it enters the cells. The virus is inactivated by physical disruption of the structure through direct interaction with the sharp edges of the GO layers.
There is no way that the "sharp edges" of GO are not damaging organ systems and endothelial tissue as well. By doing so, you are engaging reactions such as proinflammatory prostaglandin cascades, among other inflammatory reactions.
https://pubs.rsc.org/en/content/articlehtml/2020/sc/d0sc02658a