I know some of them.  IH's are wonderful at determining risk once they know what the chemicals are.  They would be great at figuring out to analyse the soup once it was sitting there.  But they are not usually versed in chemistry to the point that they could predict the breakdown products in a complex soup like this.  Maybe no one can especially after you add athlete's foot to the mix. 

However, I shall take my original inquiry and e-mail it to an emeritus prof from Hunter's school of IH who I know particularly well and see what he says.  It shouldn't hurt. Thanks for the idea.

Monona


In a message dated 12/3/2012 1:48:17 PM Eastern Standard Time, afrazier**At_Symbol_Here**PPG.COM writes:

This is the best suggestion that I have seen, use a screen shot in the back ground for the feet (at worst it would only have to be shot once or twice not repeated use.)   Isn't it common to use things like that as part of theater these days? 
If you are looking for a credentialed consultant, have you considered calling a friendly Industrial Hygiene Professor?    A quick search of ABET accredited Industrial Hygiene programs showed Hunter College of the City University of New York as having an IH program.