Two weeks is insufficient. Incubation period for IBD could be as long as 3 months (or longer), AND it may be possible for animals to be silent carriers. Incubation period for paramyxovirus could be as long as 10 months. (A full year's quarantine is now recommended, but thankfully carriers don't appear to exist).

You really need to have that boa necropsied. Being able to ID IBD versus paramyxovirus or one of the other big baddies will tell you more readily what you're dealing with, and could mean the difference between life and death for the other animals. It's unknown how IBD is transmitted, but paramyxo is transmitted by contact with secretions (like the common cold, rather than influenza). If the boa had IBD, no one's going to want those animals if they already have an existing collection. If it was paramyxo, then the animals can be declared all clear if they're ok in a year. These diseases are extremely serious and no matter how much people may want to help, they cannot be allowed to spread through captive populations. IBD is deadly (to all but the silent carriers, which are rare). Paramyxo kills 80% of untreated animals. There are other deadly and highly contagious illnesses out there with similar symptoms, such as retroviruses and reoviruses.
If you don't know what these animals might be carrying, what sane person would want to take the risk? I recall reading about one person who wound up with reovirus in their collection, and it killed every last animal--it was so persistant, even the animals kept away from the others for months eventually died. The owner had to burn her equipment just to feel safe.

Without knowing the real diagnosis for a snake that died with neurological signs, you really should not keep them anywhere where ventilation is joined--IE, not in the same building. The risk is too great--the danger is very real.