Yes, RI's can get bad quickly, but if he doesn't have other symptoms, I would wait on taking him to the vet.
If other symptoms develop; popping or wheezing, discharge from his mouth/nose, refusing food, etc. then I would take him in ASAP.
Boas are pretty resilient and tend to get RI's in bad situations compared to some other snakes.
For example, Yafe, my CP, got an RI from fed ex losing him in the cold. But Carpet's tend to be more susceptible than Boas.
You've had him for a while and your husbandry seems pretty good. I doubt one night of lower humidity would do it, unless something else is underlying.
Keep us posted, but IMO, if he hasn't shown other symptoms, a vet visit might do more harm than good right now. Again, if that changes, so does my recommendation.
Reply With Quote