I Can't Use 2 Profiles

[isrgish]

I was trying to setup 2 profiles. When I try tp sdh into the second one I get the "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!". From what I was able to gather from Google is that the known_hosts file keeps track and has a key for each server I connect to. What I'm assuming is that both profiles are using @localhost but they are providing different keys therefore I get this error. If I'm wrong please correct me.

Please help me with this.