Mandaic

npa, nph - to breathe out, fan with breath, blow up, inflate (MD 303)

PS
*npḫ - to blow, breathe, inflate (SED I No. 45v)
Eventually derived from *pḫ/ḥ ‘to breath, blow, exhale (smell)’ (SED I No. 54v) by prefixation of *n­.