Here is my plan ... While not wanting to use this as "snake oil" ... I plan on 3-5 g of Vit C in divided dosage throughout the day. It wouldn't necessarily prevent the virus, but might make it harder.
And if sick, I would 2x or 3x that while sick.
The key at that point would be to do whatever to prevent the worst consequences of the virus, like pneumonia.
Again, not saying "snake oil" or "do this and you won't catch it!" But there is much research to suggest the benefit of high dosage of Vit C. Not miracles or cures. But benefits.