Antagonist sensitivity does not by itself show that an odorant directly binds a benzodiazepine site.
Adult male mice exposed to linalool odor showed anxiety-like behavioral changes without the measured motor impairment. The effect was absent in anosmic mice and was blocked by flumazenil. The authors interpreted the pattern as involving olfactory input and benzodiazepine-responsive GABA signaling.
The study did not establish efficacy in women, children, older people or patients with anxiety disorders. Its own technical limitations included testing only adult male mice. Behavioral antagonism identifies a pathway contribution more readily than direct molecular binding.
For a mechanism opinion, separate sensory triggering, downstream neurotransmission and receptor binding. Do not equate smelling an odor with taking an oral benzodiazepine or infer a human dose-sparing interaction. The findings are a preclinical pathway hypothesis, not a clinical replacement treatment.
Source: Publication PMC6206409. The case-review applications above are interpretive analysis.
Related reading: Ecopipam Interaction Study Found Lower Midazolam Exposure Alongside Other Pathway Effects.