Ok here we go.

IBD (inverted body disease) is a viral infection that boas can carry but is fatal to pythons. IBD is very rare a lot of times people think their pet has IBD, however tests are done post mortem and the animal just has an antibiotic resistant bacterial infection.

Symptoms of IBD can be similar to URI (upper repertory infection) fluid in the mouth, stargazing, regurg, and wheezing. The more IBD progresses, you start to notice neurological symptoms, such as cork screwing and head shaking, this can also happen with severe URI so it is hard to distinguish the difference.

Now, blood in the mouth is more consistent with mouth rot which is painful to the snake but can be fixed with antibiotics.

If there was not a boa in the room and proper quarantine procedures had been followed I would think that your chances of IBD are very slim, but given those variables it's hard to say.

Please take your BP to the vet, he/she will be able to tell you for sure what’s going on with your pet and prescribe the necessary care for it. IBD, however is 100% fatal and most pythons are gone within 1 month of infection.

I hope that isn’t the case for you and I pray your pet will be ok, good luck

Ed