Dr. Mehta – When I blow my nose after irrigating sometimes I clear out thick debris. Sometimes the mucus is stringy. I have bad allergies and recently Posted on December 31, 2018March 8, 2023 by 0 Vote Up Vote Down Ask A Doctor Staff asked 4 years ago Dr. Mehta - When I blow my nose after irrigating sometimes I clear out thick debris. Sometimes the mucus is stringy. I have bad allergies and recently had a sinus infection. Is this just ridding my sinus of old stuff? Thank you. 1 Answers 0 Vote Up Vote Down Ask A Doctor Staff answered 4 years ago Nasal irrigation will wash out excess mucus in your nasal cavity. It is possible some of that mucus has been there for awhile. Please login or Register to submit your answer Username or Email Address Password Remember Me