The adenoids are located at the back of nose and when enlarged, may cause nasal obstruction, recurrent sinusitis, post nasal drip, sleep apnea, chronic runny nose, halitosis
[childrensnational.org]
[…] disease progresses, patients manifest with chronic mouth breathing, sleep disturbances, nasal obstruction, rhinorrhea, swallowing difficulties, snoring, cough, epistaxis, and halitosis
[symptoma.com]