Hi Rachel,  Obviou sly from the responses you=E2=80=99ve received there could be several possi bilities.  Dry traps are usually a good one to start with.  If yo u (and your facilities and research staff) have exhausted all possibilities there is also something called "dirty sock syndrome=".  ; Google it and you will see many reference and discussions.  Here is a link with an explanation.

 

http://www.f oxservice.com/austin/knowledge_base.asp?ID=1291219433792&_perPg=40& amp;view=articles&_category=Residential%3A%3AAir%20Conditioning%20% 26%20Heating%20&_filterField=Categories

 

We recently had an issu e that people described as dirty socks, sewer gas, etc. After several month s found the odor by reviewing the floor plan of the building and following the pipes i n the walls.  We found a couple of uncapped pipes that were no longer in use.

 

Good luck,

 

Patty

 

 

Patty Olinger, RBP

Director EHSO

Emory University

1762 Clifton Rd., Suite 1200

M.S. 0940-001-1AB

Atlanta, GA 30322

404-727-5690 office

404-727-9778 fax

www.ehso.emory.edu

 

 

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