Vyplelová Petra, Vokálek Václav, Pinc Ludvík, Pacáková Zuzana, Bartoš Luděk, Santariová Milena, Čapková Zuzana
Canine Behavior Research Center, Department of Animal Science and Ethology, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Praha, Czech Republic.
Regional Headquarters of the South Moravian Region, Police of the Czech Republic, Zámecká 416, 664 42 Brno-venkov, Modřice, Czech Republic.
Forensic Sci Int. 2014 Jan;234:13-5. doi: 10.1016/j.forsciint.2013.10.018. Epub 2013 Oct 21.
We tested the hypothesis that if odor fallout (the release of a human's odor onto an untouched object) in human subjects exists, then holding a hand above an absorbent will produce a detectable scent which will be subsequently matched in a detection test by trained canines. Scents were collected from seven males to sterile cotton absorbent squares. The left hand was used to get the control scent and the right hand served as the target scent. Each experimental subject was sitting; his left hand was laid down on a cotton square for 3 min. The right hand was held 5 cm above another cotton square for 3 min. The scent identification was done by two specially trained police German shepherds. These canines had routinely performed scent identification line-ups as part of criminal investigation procedures. Both canines performed 14 line-ups and correctly matched the collected scents of all test subjects. The results suggest the existence of human odor fallout, whereby a human scent trace is left by humans even if they do not touch an object.
如果人类存在气味沉降（即人类的气味释放到未接触过的物体上），那么将手放在吸收剂上方会产生可检测到的气味，随后经过训练的犬类在检测测试中能够匹配这种气味。从七名男性身上收集气味到无菌棉质吸收方块上。左手用于获取对照气味，右手作为目标气味。每个实验对象坐着；他的左手放在一块棉质方块上3分钟。右手在另一块棉质方块上方5厘米处保持3分钟。气味识别由两只经过特殊训练的德国牧羊犬进行。这些犬类作为刑事调查程序的一部分，经常进行气味识别列队。两只犬类都进行了14次列队，并正确匹配了所有测试对象收集到的气味。结果表明存在人类气味沉降，即即使人类不接触物体，也会留下人类气味痕迹。
