Question: what to do when you have a blocked nostril?
Answer: Use a humidifier. A humidifier provides a quick, easy way to reduce sinus pain and relieve a stuffy nose. ... 
Take a shower. ... 
Stay hydrated. ... 
Use a saline spray. ... 
Drain your sinuses. ... 
Use a warm compress. ... 
Try decongestants. ... 
Take antihistamines or allergy medicine.