My toaster started smoking after a quick crumb clean—should I keep using it?

I just gave my old toaster a quick crumb clean by tipping it upside down and shaking it out, which I've done a bunch of times before without issues. But this time, when I plugged it back in and tried to toast a slice, it started smoking a little and smelled burnt. I unplugged it right away and checked inside - no obvious crumbs or stuck bits visible. The toaster still heats up but I’m worried something might be damaged or unsafe. Has anyone experienced this? Is it okay to keep using it if the smoking stops, or should I just toss it? Also, any ideas on a safer or more thorough way to clean crumb trays without risking a smoky surprise?