When is smiling inappropriate?

Smiling can be considered inappropriate in situations that require seriousness or sensitivity, such as during a funeral, a serious conversation about someone's struggles, or when addressing a conflict. It may also be seen as disrespectful in professional settings during critical discussions or negotiations. Additionally, smiling in response to someone else's distress can come off as dismissive or unempathetic. Context and cultural norms play significant roles in determining when a smile may be deemed unsuitable.