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The relationship between agricultural environments and olfactory dysfunction.

M C Snyder1, D A Leopold, B C Chiu

  • 1Department of Otolaryngology-Head and Neck Surgery, University of Nebraska Medical Center, Omaha, Nebraska, USA. msnyder@unmc.edu

Journal of Agricultural Safety and Health
|September 16, 2003
PubMed
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Farming generally does not cause olfactory loss, but farmers with inflammatory reactions to agricultural exposures may be susceptible. This study highlights a novel link between inflammation and smell impairment in agricultural workers.

Area of Science:

  • Occupational Health
  • Environmental Medicine
  • Sensory Science

Background:

  • Olfactory dysfunction can significantly impact quality of life.
  • Agricultural environments involve numerous potential exposures that may affect sensory function.

Purpose of the Study:

  • To investigate the olfactory capabilities of farmers.
  • To identify specific agricultural exposures linked to olfactory loss.

Main Methods:

  • A cross-sectional study involving 405 individuals (farmers and non-farmers).
  • Utilized questionnaires for agricultural exposures and health history.
  • Administered a 12-item odor identification test (scratch-and-sniff).
  • Statistical analysis included general linear models and Wilcoxon rank sum tests.

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Main Results:

  • Farmers, on average, did not show statistically significant olfactory loss compared to non-farmers.
  • Sneezing after handling soybeans, wheat, or oats was associated with lower odor identification scores.
  • Suggestive links were found between olfactory ability and exposure to anhydrous ammonia, wheezing, asthma, and flu-like illnesses post-farm work.

Conclusions:

  • Overall, farming does not appear to be associated with olfactory loss.
  • Certain farmers experiencing inflammatory reactions are identified as potentially susceptible to olfactory loss.
  • A novel association between inflammatory conditions and olfactory loss is proposed.