How safe is it in terms of environmental health?
HP Posters and Wall Coverings printed on HP PVC-free Wall Paper with latex inks are approved according to health-related environmental criteria. There's no odor, printed panels are GREENGUARD Children & Schools CertifiedSM and meet AgBB criteria for health-related evaluation of VOC emissions of indoor building products.
1- HP PVC-free Wall Paper printed with HP Latex Inks are GREENGUARD Children & Schools Certified. www.greenguard.org 
2- The Committee for Health-related Evaluation of Building Products, AgBB, establishes the fundamentals for a uniform and reproducible health-related evaluation of building products in Germany, including criteria for testing and an evaluation scheme for health-related evaluation of volatile organic compound (VOC) emissions from building products used for application indoors.
You can find more information about environmental certifications in this document: HP Eco Solutions Training
