I am a new subscriber and a new beekeeper.
In the short time I have had to see postings I have noticed discussions on the search for smoker fuel.
I use tightly rolled, unpainted cardboard - rolled to the diameter of my smoker so the bellows is effective.  The cardboard is kept closed with finishing nails.  I light the fuel with my propane torch.
If the smoke is too hot, I add some green grass - or here in the Caribbean, some shredded banana leaves.
I have never seen this fuel discussed in any literature - maybe there is something wrong with it?