Her positive attitude 'rubbed off' on other people. [=other people began to have a positive attitude from being around her]
We 'rubbed' the steaks with spices before we grilled them. = We 'rubbed' spices onto the steaks before we grilled them.
It's bad enough that he beat me, but the way he keeps talking about it is just 'rubbing salt in the wound'.
(..) Now swallow. Sen, look there! - The gold seal! - Get that black slug! Over there! Get it! Hurry, before it rubs off on you! - Evil, be gone! - Haku stole this seal from Yubaba's sister. Zeniba's solid gold monogrammed seal. (..)2001 Spirited Away