Not to worry, Catspaw49, hide glue is edible, but Martin says they use seventeen types of glue in their guitars!

Most of the guitar is traditionally made with hide glue (basically hot gelatin and water - JELLO). Hide glue dries very rigid and doesn't creep, like a flexible glue, such as white glue, would. Rigid joints are very good for transferring vibrations without absorbing them.

The trouble is, hide glue is not waterproof, bad for very moist conditions, such as a tropical rainforest, but good for easy repairs and restorations.

Watch out for that nitrocellulose laquer finnish! I bet THAT is poisonous!