“…It is able to imitate the olfaction system of humans and mammals, and to recognize odorant gases (Sohn et al, 2008;Zhang et al, 2011). In the past 20 years, a number of studies on E-nose have been presented for rapid detection and classification of chemicals in many fields, that is, food industry (Brudzewski et al, 2012a(Brudzewski et al, , 2012bConcina et al, 2012;Bhattacharyya et al, 2008;Tudu et al, 2009), environmental monitor (Arnold et al, 2012;Cesare et al, 2008;Romain and Nicolas, 2010), medical diagnosis (Tran et al, 2010;Guo et al, 2010;Trincavelli et al, 2010;Adiguzel and Kulah, 2015;Bruins et al, 2013), public security (Brudzewski et al, 2012a(Brudzewski et al, , 2012b, etc.…”