I usually run a humidifier in my home 24/7 during the winter anyway, so
I don't think the moisture will be that critical, but it's something to
keep an eye on.

I'm wearing the clothes that hold the chemicals from the sap and fabric
softeners so I'm not sure how much worse off I'll be if they are in the
air.

That kind of heat I expect will heat more than just the room. It's a
shame there isn't a way to take advantage of all this extra heat which
is literally being thrown out the window. We do a lot of laundry here
and with heating costs going up this could have a huge impact on our
bill.

On the link provided there were too products. Maybe if I used them
both in conjunction. There must be some way to properly filter the
vent and use that heat!

(thanks for your post)