I’m so sorry. It’s so hard to lose them.
I have only had one time in my life without animals and I missed them dreadfully.
My piggies and bunnies live outside but when they do come in during hot weather, I dont allow them to share airspace and never have any physical contact. I take lots of measures to ensure there is no cross contamination, and i know
@Swissgreys is the same. Some illnesses require direct contact, others are airborne.
For me (and this probably isn’t what you want to hear) it’s not a risk I would take. I know others have kept them in the same room without issue though.
One of my current rabbits, when I first got them, suddenly became unwell with what seemed to be a respiratory illness. Saw the vet, she was given meds but did not get better. I went back to the vet and this time saw an older vet who immediately knew what was wrong. She had caught syphillis probably from her mother. It is rare and he had only seen a couple of cases in his whole career. Both rabbits had to be treated. She is now fully over it, and not that my piggies were at risk, but this made me even more aware of the risks of cross contamination so I personally would not take the risk.
Would you be open to rabbits being outdoors/shed and aviary? Obviously you won’t know what space you will have, whether you will have a garden etc in future, but if it is a possibility then perhaps there is a method by which you can have both and remove that element of potential risk.