Regarding Residual Scent

Susan and Allison are at the point in the training process where they are teaching Brody and Henna to ignore the residual odors in the containers as they search for the target odors on the wheel.

Here is a discussion found in the Research Index where the topic of residual odors in training the actual alert to a DAD is addressed:  http://moreseizurealertresearch.blogspot.com/2013/06/hiding-scent-on-body-lsrthfls.html