Hello,
pls don't flame me on this post! Recently (on & off), we've been
smelling some
smoke odors in our 2-story house. There are NO smokers in our house.
There is no odor in the mornings nor afternoons, only in the
evening/nights.

I scanned some posts here and it appears that smoke odors may be
related
to the A/C components, correct?

One thing I have yet to determine is if a walking neighbor (who is a
smoker)
could smoke around the perimeter and the odors would permeate our
house.
I don't know if this is posible with the A/C off.

Thanks for any info!