Since Yellow Fungus is mainly a reptile pathogen, it poses little to no risk to humans.  Even though the pathogen is not zoonotic (able to transmit from animals to humans) in nature, there have been a few confirmed cases of humans with severely weakened immune systems contracting it.  So, it is recommended that you take responsible hygienic steps to protect yourself.  As a result, please wash your hands after treating your bearded dragon, clean and wash all objects with which they come into contact outside of their vivarium, wash your clothing in hot water if your dragon has handled them, and so on.