Why there's odor/white smoke when using the Xiaomi Microwave Oven for the first time?

When using the microwave oven for the first time, there might be residues or grease from the manufacturing process inside the cavity. Therefore, heating may result in an odor or even produce white smoke, which is normal.
Please place a few lemon slices in a cup in the microwave oven and heat on high power for 2-3 minutes to deodorize the microwave oven.