The Proto-Indo-European word *pneu-
Word *pneu-
Meaning to breathe
Synonyms *dhwes-, *k̂weshₓ-, *dhwésmi

Comments
Gk. pneuma, ON fnysa, Eng. fnēosan/sneeze Gm. fnehan/

Other words that might be of interest
*ses- ‘to rest, to sleep, to keep quiet’