Thanks for your answers. I have to admit I literally have no idea what a snake fart sounds like. It was dark in the room what it happens and by the time I got to the light it wzd over so I couldn't see if his mouth was open or not. No unrates or poop at first glance. I'll check more thoroughly tomorrow morning though. What got me really concerned was that without convulsing or anything the sounds were accompanied by some sort of spasms throughout his body.