If Bud and Doyle had died in the desert...
Way over thinking this and the Nyquil haze doesnt help, but oh well...
Let's say B and D did die in the Desert portion of the Dome. After a while, wouldn't decomp make the building unbearable?
However, taking this one step further, there didn't appear to be a Doctor in the building, and what if someone had gotten seriouly sick?