Why is it smoke coming from your vents?

Smoke coming from your vents could indicate a serious issue, such as an electrical malfunction, overheating components, or a fire within the HVAC system. It may also be caused by debris or dust burning off in the ducts if the system has recently been turned on after a period of inactivity. It's crucial to turn off the system immediately and call a professional for inspection to prevent potential hazards. Ignoring the problem could lead to further damage or a fire risk.