There are some "ceiling vents" that have built in fans ostensibly (I
love that word) just for that purpose.  I don't have one but surely
someone of us has done that mod.  I recall that Korkwood (not a list
member) has one installed.

Pensionerd ( still out there on my sunny rock)

> I bet someone has installed an extractor fan!  But good point.  Fried fish
> scented pop top - mmm hmm.
>
> Tom