I think you are talking "heavy smoke".
In Rytek's world, which is where that comment is found, the smokers his legacy company (sausagemaker) sells are the electric box smokers, using a pan of hickory sawdust over an electric heating element. I've not seen one of his smokers in operation, but the normal operation with pans of sawdust or chips over a heat source is to get a lot of white smoke. Is for me anyway. Even more so they way he recommends doing it, which is to wet this sawdust. And it is a special sawdust......not chips or pellets or chunks.
For those with a smoker of this type, is it possible to get heavy blue smoke out of one?
Next question: are you left with charcoal or does it turn to ash? (assuming you don't catch it on fire)