American Flyer Accessories

I am new at this so please forgive any ignorance. I finally got my vintage American Flyer running on a small oval. It appears the locomotive stack would take a pellet for smoke. Local hobby store says they are not sold anymore. I think I found some on Ebay, but how do they work. Light them with a match and deposit in the stack?

Also, I’m interested in whistle. Are ones made that the train sets off as it rounds the track? Battery operated operated by a switch? What and what’s best?

American Flyer engines with the smoke/choo choo feature use a smoke fluid. Most any current smoke fluid will work, the original was cedar scented. Please post the engine number so we can provide additional details.