A person who is a fan of people's smiles and loves to see and make people happy could be described using various terms, such as:
- Smiles Enthusiast
- Happiness Advocate
- Joy Aficionado
- Cheerfulness Admirer
- Grin Enthusiast
- Positivity Lover
- Happiness Enthusiast
- Smiles Devotee
- Joy Seeker
- Pleasure Connoisseur
These terms highlight someone's appreciation for the positive emotions and happiness of others and their desire to contribute to that joy.