Pasteurella is not airborne. It is passed on through secretions (like nasal discharge). A lot of rabbits carry the bacteria and never show any symptoms so a lot of people’s rabbits probably actually have it but may never show symptoms.

Cats can carry the bacteria in their saliva but I’m not sure if it ever causes symptoms. Someone else might be able to answer that for you.

Your bunny would probably be more relaxed at your grandparents house than at a busy place like a pet store, if you do have the option. Pasteurella symptoms can be brought on by severe stress so you’ll want your bunny to stay as stress-free as possible.

I’m glad he’s recovered and feeling better.

I agree with LPT – he’d be better at your grandparents where there is a stress free environment.

I vote grandparents! Pet stores are generally busy and staff don’t have much training with rabbits. I was in my local pet store yesterday yesterday buying supplies and asked about a French lop in the adoption area but the girl told me she was an English lop because of the patterns (it was a black and white butterfly). She also said she was fully grown but she was only half her adult size! thought the difference is evident to anyone without training!
If your rabbit gets sick it may be over looked or just not recognized and your grandparents will care about your pets happiness much more!

Yes, pasteurella can be present in rabbits and they never show symptoms. Many will have it and no one ever knows. Your bun probably had it for some time and then something happened where it was able to express symptoms. I’ve heard of people having buns that are suddenly sick with it even though they hadn’t been exposed to any other buns for a long time.
I agree with the others, your grandparents are probably a better choice.

Ditto. Having your rabbit looked after in the least stress-free environment would be best.

Also, since he would be somewhat immune compromised, he could be at risk of picking up something else being around other rabbits.