Washer started smoking

Wife started washer,then pulled button out to stop.Put more clothes in and restarted.Made a funny humming noise,then promptly filled the house with smoke…What can I check?

Remove the front panel by inserting a putty knife into the top groove in line with the lid opening on each side to release the clips. Tilt panel outward and lift away from cabinet. Inspect the motor and motor connector/wiring for signs of overheating (smell for odor). Open control panel and inspect motor start capacitor (black cylinder).

Eric