I don't own a car but I rent them a lot. Part of my "go bag" includes blue tack. A semi sticky putty that doesn't leave a residue. I use this to stick my phone to the surface of whatever screen is in the car. This puts it right where I can see it and interact with it easily. Then I don't have to learn a new system in every different car I drive.
I am a recent immigrant to the EU from the US. Every country here practically runs on WhatsApp. From food delivery, to government reps, to your doctor, it's everywhere. It would take a lot to shake people from using it.
Turn off the breaker that feeds that light. If you don't see any activity, get up on a ladder and listen. If you don't hear insect noise knock on the ceiling near the light and listen again. If clear, look for a screw that is holding up the conical shaped cover, that should be a decorative piece that can be slid down the pole. You should then be able to see what you are dealing with.
You can use wasp spray up into the gangbox if you want. The suggestion to use painters tape to cover hole under the decorative cover is a good one. Just be sure that you allow the wasp spray to completely dry before turning on the breaker again.
I have approached this kind of situation similarly.
I don't own a car but I rent them a lot. Part of my "go bag" includes blue tack. A semi sticky putty that doesn't leave a residue. I use this to stick my phone to the surface of whatever screen is in the car. This puts it right where I can see it and interact with it easily. Then I don't have to learn a new system in every different car I drive.