Cineole, Thymol and Camphor Nasal Challenges and their Effect on Nasal Symptoms and Cough in an Animal Model

Inhalation of aromatic vapours suppressed coughing induced by citric acid (CA) in naive animals. No data are available about their effects in an animal model with primarily up-regulated cough reflex. New data indicate that aromatic vapours suppress cough via effect on nasal sensory nerves.