leave a bad taste in mouth
leave a bad taste in (one's) mouth
To give one a negative impression (based on something that has already happened). I don't know, man, the fact that he lied to you just leaves a bad taste in my mouth. The way they conducted the interview left me with a bad taste in my mouth. I don't think I'd accept the job even if they offered it.
leave a bad taste in someone's mouth
[for something] to leave a bad feeling or memory with someone. The whole business about the missing money left a bad taste in his mouth. It was a very nice hotel, but something about it left a bad taste in my mouth.