Positive meaning
A dream of a false smile may indicate that you are able to see good even in difficult situations. It could be a signal that you are optimistic and trying to improve the atmosphere around you, thus creating a positive environment.
Negative meaning
A false smile in a dream may suggest inner conflict or a feeling of loneliness. It might symbolize that you are trying to hide your true emotions and appear happy, even though you feel sad or unhappy inside.
Neutral meaning
A false smile in a dream may indicate a situation where not everything is as it seems. It could be a warning against superficiality in interpersonal relationships or a signal that you should pay attention to the true feelings and intentions of those around you.