Im 20 and i have sinusitis since i was 5. i had some nasal polyps and i got it removed but i still cantreally smell.what can i do to be able to smell?

See an ENT doctor: Nasal polyps have a tendency to return over time. When they do, symptoms include pressure, difficulty breathing, and loss of sense of smell. To minimize symptoms and postpone polyp recurrence, treatment includes steroids (oral prednisone, nasal fluticasone / etc.), leukotriene inhibitors (e g singulair/ montelukast), and adjunctive treatment e g allergy testing, immunotherapy, and antihistamines.