React in Disgust?

I have a sim that is now a proper celebrity, but she has been doing this even when she was not that high level, everywhere she loads ( any venue except home ) she does a react in disgust. I can't figure out what that means, or maybe why it happens rather. She did do the positivity challenge, so don't know if that has any effect on her actions. My sim also has the loves her fans, so I'm not sure what causes this. Any ideas? It's not a problem, just curious as to why it happens.