Does size matter

Can I just set up my cold smoke generator in my BBQ (which is quite large) or is it best to build something bespoke ?

Is someone feeding you these questions, as part of a really sophisticated marketing campaign?

I'd have thought that the Frontier or the Exel is just fine, but if you want something smaller I've seen a new product that ticks the right boxes* (and is eco friendly too).

*Oh dear, I crack myself up sometimes.