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Updated: May 3, 2026

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Mirror sniffing: humans mimic olfactory sampling behavior.

Anat Arzi1, Limor Shedlesky, Lavi Secundo

  • 1Department of Neurobiology, Weizmann Institute of Science, 234 Herzl street, Rehovot 76100, Israel. anat.arzi@gmail.com.

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|January 25, 2014
PubMed
Summary
This summary is machine-generated.

Humans automatically sniff when they hear others sniff, even without any odor present. This involuntary response highlights the importance of social chemosignaling and olfactory processing in human behavior.

Keywords:
contagious behaviormimicrymirror behaviormirror neuronssniffing

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Area of Science:

  • Human behavior
  • Olfactory processing
  • Social chemosignaling

Background:

  • Social chemosignaling significantly influences human behavior.
  • Sniffing is crucial for processing odors and chemosignals.
  • The potential for an automatic human response to conspecific sniffing is unexplored.

Purpose of the Study:

  • To investigate whether humans exhibit an automatic sniffing response to the sniffing sounds of others.
  • To explore the role of auditory and visual cues in triggering this response.
  • To understand the implications for olfactory information processing in social contexts.

Main Methods:

  • Human subjects watched a movie with olfactory sniffing events.
  • Sniffing behavior was measured during movie viewing.
  • Analysis focused on responses to auditory and visual sniffing cues.

Main Results:

  • Subjects exhibited sniffing behavior in response to conspecific sniffing sounds from the movie.
  • This effect was stronger when subjects heard the sniff but did not see the object being sniffed.
  • The response occurred despite the complete absence of actual odors.

Conclusions:

  • Humans possess an automatic mechanism to respond to conspecific sniffing, primarily driven by auditory cues.
  • This involuntary sniffing response underscores the significance of olfactory processing in human social interactions.
  • The findings suggest a parallel to visual orienting responses towards conspecific gaze, emphasizing olfactory cues.