[Shotimes] smoke, cleaning headliner?

[van Oss]

I am prepping a wagon for a relative with allergies.  The car's previous
owner smoked.

I plan to do what I reasonably can to minimize the odor.  Mostly going after
the soft surfaces.  We have a brand-new carpet to install, and we have front
leather seats from a non-smoking car.  The cloth rear seats, and the
cargo-area carpet, we can shampoo.

What advice about cleaning the headliner?  Do I have to worry about the
cloth being attached to the fiberglass backing with a water-soluble
adheasive (that's been said on the list in the past)?  What can I safely
use, preferably leaving the headliner in place?

I know some smoke might have got into the vents, but I'm not pulling the
dash.  We will, of course, scrub all the interior plastic trims.

Any other stuff we should do?  Thanks.

VO