Here are some links for furniture related sites for Multiple Chemical Sensitivity.  I have not tested any of these but please email if you have any good information about it and I will post it here.

http://www.naturaltreefurniture.com/

Second Life Furniture

www.furnature.com

Organic Leather

http://www.laine.com.au/home2/products/products.htm

http://www.spinneybeck.com

Article on Faux Leather

http://www.furnituretoday.com/article/CA6331162.html