http://community.homedepot.com/t5/Install-Replace/Allure-Flooring-safety/td-p/1029 just went to do more digging up on possible off-gassing from allure floorings....interesting report...again claiming zero health hazards. Anyway, to each his own.
http://elegantfloor.blogspot.sg/ just came across this report - apparently, HERF (high-end resilient flooring) is rated at E1 (excellent) for toxic emissions. fyi.