sternutatory
That causes or induces sneezing; sternutative.
When the gut protrudes and will not remain in its place, scrape the finest and most compact silphium (assafoetida?) into small pieces and apply as a cataplasm, and apply a sternutatory medicine to the nose and provoke sneezing
Where it comes from
From Latin sternūtātōrius, from sternuō (“sneeze”).
Adapted from the Wiktionary entry sternutatory (CC BY-SA 4.0).