Is it an urban myth or the real deal? I have no idea so will update you on results following video. These from Amazon work well https://amzn.to/32EmZqf but don't forget you need to get your chimney swept at least twice a year depending on what you burn.

As always get a professional in every year to sweep your chimney and inspect. Always install a carbon monoxide alarm and seek advice from professionals. Finally make sure you have a smoke alarm and test it regularly. Be safe people.

This is not an instructional video and is intended as entertainment purposes only. Always get professional advice before tackling any DIY project. DO NOT DO THIS YOURSELF. You have been warned.