Colleague has been off for a week with flu. Really unwell, barely able to get out of bed, feeling dreadful flu. Has posted all over Facebook that they'll be back tomorrow but is "coughing like a trooper" and "constantly blowing my nose."
The office is small, our desks are all next to this colleague within coughing/sneezing distance with no window nearby.
How do we avoid catching it? Colleague is awful for covering their mouth when they cough etc too. 