The answer to 'recessed lighting burning smell' is that a burning smell from recessed lighting is typically caused by an electrical issue that requires prompt attention. This could be due to a faulty light fixture, overheating, or a problem with the wiring. The smell may be accompanied by smoke, flickering lights, or the light fixture feeling hot to the touch.
In most cases, a burning smell from recessed lighting indicates a serious problem that should not be ignored. While some basic troubleshooting can be done, it's generally best to call a licensed electrician to diagnose and repair the issue. Attempting to fix the problem yourself could result in further damage or even a fire hazard.