Most spy camera detectors generally offer 2 ways to find hidden cameras: make sure they reflect light from the camera lens (how to use a flashlight).
Detects radio frequency radiation from the camera.
The detectors will usually sound when they find the signal and give you audible warnings.
To detect hidden cameras and microphones, listen carefully for buzzes or clicks, as hidden cameras often make low noises. Also check all smoke and electronic detectors in the room, as people often hide cameras and microphones in devices that require electricity.
Hidden camera detection apps are available on your Android or iPhone or at a nearby security store. “The hidden camera detector can find a camera anywhere, no matter how well hidden. Just press the button, it captures a light infrared beam, and you can see the reflection of each camera lens.
Turn off all Airbnb lights and turn on your flashlight. Slowly make a few tissues in each room, looking for small flashes of light relative to the environment. If you notice it coming from an object, take a closer look. Maybe you just found a hidden camera.
Use the mobile flashlight at all angles in a dark room. Reflection of light from any point is an indicator of a hidden camera. If there is a camera lens inside, it will light up. If the smoke detector is placed close enough, you can use commercially available and online glare detectors.