Fig. 1.

Chamber configuration and equipment at the Monell Chemical Senses Center. Top 2 photos: Environmental chamber configuration with furniture and high-touch surfaces, sample tubing hook-up, and chamber entrance door, which was modified with a drawer for cloth exchange. Third from top: Sample collection manifold constructed with 4 key instrument rotameters and a Gast DOA P707-AA vacuum pump. Bottom: Customized sampling vest, with Tygon tubing from the 4-channel sample collection manifold to the breathing zone of the volunteer and connected to the sample cartridges.