Sinapis Nigra sin-n.

Stoppage of the left nostril; scanty, acrid discharge from the nose; sneezing.

Clinical:
Hay fever, with hot, dry nose, nostrils alternately stopped.
Sneezing and lachrymation, with thick, acrid discharge, smarting, burning and itching of the eyes; oppression of the chest, aggravated at night on lying down.
Wheezing in the chest and difficult breathing.
Dryness of the nares and pharynx, with thick, lumpy secretion.