expression, ichidan verb
bribe; grease someone's palm
Idiomatic expression literally meaning 'to make someone sniff nose medicine,' used figuratively for bribing or buying someone's favor. Often implies a secret or underhanded payment.
See also: 鼻薬
役人に鼻薬を嗅がせて許可をもらったらしい。
It seems he bribed the official and got the permit.
あの政治家は鼻薬を嗅がせれば何でも通すと言われている。
They say that politician will pass anything if you grease his palm.