EP Case Foam...Outgassing??

Does anyone remember the title of thread concerning the outgassing of certain types of EP case foams? I've recently purchased a Shure microphone/receiver/transmitter set that came in a very nice foam-lined case, but don't want to put my EP's at peril if it's not safe to use for that purpose. Thanks for any help you can offer.
Larry Seguin
Taos, New Mexico

Here's the most recent one, Larry, entitled bulk "pluck" foam.
http://www.astromart.com/forums/viewpost.asp?forum_post_id=426320&poll_id=&news_id=&page=7
Linton