1) Causative 2) Causing nasal discharge 1) Causative 
something which causes sneezing or for nasal ingestion
(er´īn) promoting a nasal discharge. an agent that has this effect.
Er'rhine noun [ Greek ...; ... in + ..., ..., nose: confer French errhin .] (Medicine) A medicine designed to be snuffed up the nose, to promote discharges of mucus; a sternutatory. Coxe. -- adjective Causing or increasing secretion of nasal mucus. 
In medicine, errhine describes something that causes nasal secretions.
[adj] - causing nasal discharge
errhine A medicine that when applied to the mucous membrane of the nose increases the natural secretioins and produces sneezing.
adjective causing nasal discharge