Will Microwave ovens affect Bluetooth device operation?

It is correct that microwave ovens work at a nominal frequency of 2.45 GHz, which places it in the middle of the 2.4GHz ISM band. However, modern microwave ovens are well shielded and tests have been made at very short distances (down to 1 m) from active microwave ovens, and the Bluetooth signal has remained intact.

However, if you place your bluetooth device inside a microwave oven while the microwave oven is operating, it will, in fact, adversely affect the operation of the device.