Yeah - Neimies have those almost noseless faces that would mean they would have to inhale through their mouth to sniff something deeply. (Much as a wine taster does to get the full aroma of a glass exposed to as much of their palate as possible. A bit like Hannibal Lecter, actually...)
Ghez would have sneered at the plant, worked out if it was either edible or of any use as a weapon, and then ignored it.