nothing bad happened. I would remember it.

So many people making imagines and headcanons of rocky looking after grace while he has the flu or worrying about grace dying even though grace only has a cold. But. Grace is not going to get a cold. Grace will never have a cold again in his life. The viruses on earth that have adapted to human biology to cause viral infections do not exist when you are floating alone in space in a ventilated spacecraft, and they would not exist on an alien planet because all of those viruses are adapted to eridian biology. They would not recognise human hosts. Grace isnt getting a cold. If grace gets infected by an alien virus he would probably get very very very sick because his immune system would have absolutely no idea how to fight it. Colds and flus dont just happen. Something has to cause them. There is nothing in grace's vicinity thay is going to cause a cold. He is taking part in the most extreme form of social distancing possible. Theres no one or nothing to spread a cold to him.