 The investigators aimed to evaluate by the Sniffin Sticks test the effects on olfactory functions of nasal steroids and leukotriene antagonists used for allergic rhinitis.Thirty patients with seasonal were included in this study. Patients were randomly divided into three groups of 10 patients; group 1 received montelukast sodium and mometasone furoate therapy, group 2 received only montelukast, and group 3 only mometasone furoate. Patients olfactory functions were determined using the Sniffin Sticks olfactory test before and after a month treatments. 