Charak Samhita
संस्पृश्यमर्माण्यनिलस्तुमूर्ध्निविष्वक्पथस्थःक्षवथुंकरोति। क्रुद्धःससंशोष्यकफंतुनासाशृङ्गाटकघ्राणविशोषणंच॥१११॥
Pathogenesis of sneezing (ksavathu): Vata afflicting the vital organs and moving in random directions causes sneezing Pathogenesis of dryness of nasal mucosa (nasa shosha): Aggravated vata dries up kapha in the junction of nose with forehead (shranghataka marma) causes dry nose and results in loss of sense of smell.
english translation
saMspRzyamarmANyanilastumUrdhniviSvakpathasthaHkSavathuMkaroti। kruddhaHsasaMzoSyakaphaMtunAsAzRGgATakaghrANavizoSaNaMca॥111॥
hk transliteration by Sanscript