Smoke was from crumbs in oven left on.
6 seconds sound clip from the In the Line of Fire movie soundboard.
You can hear this line at 00:07:45 in the Blu-ray version of the movie.
Quote context
[...]
- Monroe wanted us to check out some wacko.
- No. Go home, hug your wife and kid.
- I am not a nosy lady. I don't snoop, but smoke alarm was going off. I get scared.
- I get more scared when I see what is there inside.
- Smoke was from crumbs in oven left on.
- Thirty-one years I'm in this country.
- So when I see this, these killing things... I call police.
- They say they call Secret Service. But two days you don't come.
- Well, the president gets approximately 1400 threats a year, ma'am. We gotta check them all.
[...]