The answer to 'why is my recessed lighting burning smell' is that the recessed lighting fixture is likely overheating, which can be caused by several common issues. This burning smell is a sign of a serious electrical problem that requires prompt attention to prevent a fire hazard.
Some common causes of a burning smell from recessed lighting include a malfunctioning light bulb, a problem with the electrical wiring or connections, or improper installation of the fixture. If the recessed lights are not the proper type for the space or are being used with the wrong bulbs, this can also lead to overheating and a burning smell. It's important to address the underlying issue right away, as a burning smell is a clear sign of a fire risk.