irritation of the nose

鼻子发酸，指悲伤，心酸to feel sad; to feel a twinge in the nose

• 这些苦难和苦闷，读来倍感触目惊心，时觉鼻酸眼红。

  Reading about this suffering and anguish, one feels shocked and has a twinge in the nose and red eyes.

• 虽然是讲中国美食的纪录片，可是看完后没有流口水，却是莫名的一直鼻酸。

  Even though it is a documentary about Chinese food, it does not make one's mouth water, but it gives one an inexplicable feeling of sadness.