We are traveling this weekend for my 3 year old nephew's birthday party, planning to stay at my sister's house (mom of nephew). He has a cold and is coughing right now. With a 6.5 month old baby, would you stay at their house?

We could also stay at my parents' house an hour away, but DH is allergic to their dogs, so he'd be pretty miserable. Or stay at a hotel but obviously that gets expensive.

I try not to be totally germaphobic, and feel a certain amount of exposure to germs is healthy, but I also am not about to expose a baby to sickness on purpose. So, what's sort of normal on this issue?

We could also cancel the trip altogether, but that would make me very sad, plus we have to get my dog from my sister at some point soon. We can reschedule, miss the party, obviously, but we are busy the next few weekends too. And like i said, we have to get the dog.