Feeling a light draft or air movement around a microwave oven during use does not necessarily indicate a radiation leak. Microwave ovens have internal cooling systems that use fans to circulate air and prevent overheating. These fans help dissipate heat generated by the microwave's components, such as the magnetron (the device that generates the microwaves).
The air movement you feel is likely a result of this internal cooling system and is a normal operating characteristic of the microwave oven. It helps keep the components cool and ensures the oven functions properly.
However, it is important to note that while feeling air movement is not a sign of a radiation leak, it does not guarantee that there is no leakage. Microwave ovens are designed with safety measures to contain and prevent microwave radiation from leaking outside the oven cavity. Manufacturers are required to comply with strict regulations and safety standards to ensure microwave ovens are safe for use.
To ensure the safety of your microwave oven, you can periodically inspect the door seal for any damages or wear and tear. If you suspect a radiation leak or have concerns about the safety of your microwave oven, it is best to contact the manufacturer or a qualified technician for a professional evaluation and potential repair.