Fire Alarm

This happened during my first cooking of aalo sabji. I didnot know that so much of smoke will come it you put oil mustard etc. I happily started cooking. Suddenly smoke filled in the house house. The fire alarm went off. I immediately put the exhaust. Opened the door. Still the alarm was on. It remained on for 5 minutes of so. I was wondering if the fire engine and police will come. Nobody came. Nothing happened. Only aaloo came out fine. Bit burnt but then there is always first time for everything. The only thing that happened was that the house was smelling of aaloo for the next few days.