Bubbling scales on the belly?

[Bogertophis]

If you can not get your snake to a vet quickly, Mountainside Medical will sell silvadene (silver sulfadiazine) online w/o a prescription. It is better for snake burns than the petroleum-gel based antibiotic ointments.

Yes, I also highly recommend using Silvadene (silver sulfadiazine) for this issue; I've had no snakes with burns but have used this for another skin issue on a rescued boa- it's well worth getting your hands on this product for your snake's healing.