Can anyone tell me how to handle such a situation? My husband works wi…

Can anyone tell me how to handle such a situation? My husband works with his brother, who had a temperature of 39 today and he probably got sick. The thing is that they came into contact, and besides, the mother-in-law lives nearby and could also spread the disease. I wouldn't worry if it wasn't December when the same thing happened. His brother infected everyone, apparently with the crown, we didn't smell or taste anything. I was ill for almost two months. Now God forbid this happens again, I can't even recover because I've been sick for nine months already. We're sleeping in different rooms now, but the bathroom, bathtub, kitchen are all one.