A security apparatus comprising: a screening station including a three dimensional screening zone defined between an ingress portal and an egress portal of the screening station for odor emitter/-s to pass through the screening zone, to be screened for one or more target odors and a first observation room; a first door for closing the ingress portal and a second door for closing the egress portal, characterized in that the screening station being fortified and substantially airtight and being situated remote from the first observation room with a given distance D1; wherein a conduit including a first end and a second end, the conduit attached adjacent the screening station proximate the first end and attached adjacent the first observation room proximate the second end, wherein gas can flow freely through the conduit from the screening station including the screening zone to the first observation room; wherein a first animate odor detector located in the first observation room and trained to identify at least one target odor; wherein the first observation room includes an airflow inducer for inducing airflow from within the screening zone, through the conduit, and to the first observation room to entrain odors in the first observation room that were emitted in the screening zone so that the first animate odor detector is exposed to the entrained odors to screen the odors for one or more target odors; and wherein a porous structure defining a porous zone between the screening zone and the conduit to filter air, to block an odor emitter from entering the conduit and as visual barrier to prevent an odor emitter from seeing down the conduit, wherein the conduit includes one or more baffles for protecting the first animate odor detector and anyone else in the first observation room; and whereby air flows from within the screening zone, through the porous zone, through the conduit, and to the first observation room to entrain odors in the first observation room that were emitted in the screening zone so that the first animate odor detector is exposed to the entrained odors to screen the odors for one or more target odors. a screening station including a three dimensional screening zone defined between an ingress portal and an egress portal of the screening station for odor emitter/-s to pass through the screening zone, to be screened for one or more target odors and a first observation room; a first door for closing the ingress portal and a second door for closing the egress portal, characterized in that the screening station being fortified and substantially airtight and being situated remote from the first observation room with a given distance D1; wherein a conduit including a first end and a second end, the conduit attached adjacent the screening station proximate the first end and attached adjacent the first observation room proximate the second end, wherein gas can flow freely through the conduit from the screening station including the screening zone to the first observation room; wherein a first animate odor detector located in the first observation room and trained to identify at least one target odor; wherein the first observation room includes an airflow inducer for inducing airflow from within the screening zone, through the conduit, and to the first observation room to entrain odors in the first observation room that were emitted in the screening zone so that the first animate odor detector is exposed to the entrained odors to screen the odors for one or more target odors; and wherein a porous structure defining a porous zone between the screening zone and the conduit to filter air, to block an odor emitter from entering the conduit and as visual barrier to prevent an odor emitter from seeing down the conduit, wherein the conduit includes one or more baffles for protecting the first animate odor detector and anyone else in the first observation room; and whereby air flows from within the screening zone, through the porous zone, through the conduit, and to the first observation room to entrain odors in the first observation room that were emitted in the screening zone so that the first animate odor detector is exposed to the entrained odors to screen the odors for one or more target odors.