If you've had the both of them in the same enclosure, you have either:

1. Been really lucky and the albino hasn't caught it (same as you could go to work or school with someone with a cold - you might not ALWAYS catch it).
2. Got an albino python that's incubating the respiratory germs and might present you with symptoms days, weeks or months along the line (If you DO catch a cold from someone you've been around, it's usually several days to a week after THEY had it... because it takes time for there to be enough germs to make you feel sick).

Reptiles take longer to show symptoms than mammals do for several reasons - I wouldn't assume your albino's completely healthy, and keep watching it like a hawk for signs of respiratory infection.

As for IBD (Inclusion Body Disease)... if one of your animals has it, then housing other animals with it is going to make it much more likely they'll all get it; if none of your animals have it, then they don't have the disease to spread between themselves. However, as I said... not having it and "not showing symptoms of it" are two different things...