The answer to 'why is my light fixture burning smell' is that the light fixture may be overheating or there could be an electrical issue. A burning smell from a light fixture is often a sign of a problem that requires immediate attention. This could be caused by a variety of issues, such as a loose connection, a damaged component, or an overloaded circuit.
If you notice a burning smell coming from your light fixture, it's important to turn off the power to the fixture immediately and investigate the issue further. You'll want to check for any visible signs of damage or overheating, and make sure all connections are tight and secure. In some cases, the fixture may simply need to be replaced if the internal components have failed.