2009 Honda Civic air condition problem?

So I just purchased my 2009 Honda Civic 4 days ago and my mom comes home from driving it and says there's this werid noise coming from the passenger side any time the air is on. It wasn't doing that til now, it sounds like fan it's a loud buzz noise and it's annoying af and I want it gone. Any one help me please?

My mom has the same problem from her 2012 Civic also. Since she usually listen to music loudly it doesn't bother her but everything has worked for the last 3 year of having it. If it super loud and noticeable you may have a problem with your blower motor.