It might take a while to air out the fiberglass resin smell however I don't believe there is a saftey issue.
DIY and fiberglass and safety
I have a friend of mine that built some bass traps and acoustic panels out of fiberglass and considering what he paid for the raw materials, they do a good job; however, I wonder how safe it is to have all that fiberglass in a listening room. Does anyone know if it is safe?