Movements and gestures

зажимђть/зажђть нћздриa to pinch one's nose
NB The above expression describes an action performed so as not to smell something unpleasant.
зажимђть/зажђть однџ ноздрєa to pinch one nostril
NB The above expression usually describes what one does to close one nostril while leaving the other free to snort tobacco or narcotics, use a nasal spray, clear one nasal passage, etc.
вздрђгивать [no Pf.]: нћздриn вздрђгивают;
трепетђть [no Pf.]: нћздриn трепљщут
someone's nostrils quiver
раздувђться [no Pf.]: нћздриn раздувђются someone's nostrils flare
NB When applied to humans, the above expression usually describes a symptom of anger.