Cough response to citric acid aerosol in occasional smokers.Br Med J (Clin Res Ed) 1986; 293 doi: https://doi.org/10.1136/bmj.293.6561.1528 (Published 13 December 1986) Cite this as: Br Med J (Clin Res Ed) 1986;293:1528
- J C Pounsford,
- K B Saunders
Twenty two normal women volunteers underwent a standard cough provocation test by inhaling solutions of citric acid of progressively increasing concentration. Eight were non-smokers, eight moderate smokers, and six occasional smokers. All the non-smokers and moderate smokers coughed. Moderate smokers tended to cough more than non-smokers, but not significantly so. None of the occasional smokers coughed at all (p less than 0.001). Possibly the ability to smoke occasionally with enjoyment is a marker for a diminished cough reflex.