Smoke detecting robot using Arduino

Hello, noob question here

I need to use the Arduino in a project where a robot detects smoke and plays a sound effect of someone coughing. I have almost no experience with the Arduino but its for a subject that lasts 3 days, I can make the smoke detector but I'm having trouble finding out how to use the signal to activate an audio output. What can I use and how would I use it?

Any help would be EXTREMELY appreciated :cold_sweat:

Search for WAV or MP3 arduino shields, they could play sound on arduino. There should be also example code included to start with, Playground section link just top left side of this page..