There seems to be a link. I remember my very first exposure to an uncomfortable odour was a foot powder a relative was using that was staying with me. I threw it out, I couldn't take it anymore. I had PN for about 1 week at that point,and I've been chemical sensetive ever since.
http://world.std.com/~habib/thegarde...soverview.html
http://www.mcsrr.org/resources/biomarkers.html