Is smell from wood rot? Carl, Jeff?

[Guest guest]

I've been trying to determine what source of odor is that I smell primarily in

summer in house. I keep all the windows shut through summer because if I open

one, the smell is worse.

I assumed that opening a window was causing a loss of pressure inside house and

attic air flowed down since house is air leaky between attic, basement and

house. Then yesterday was hanging a blind upstairs and opened window up and

smelled odor much stronger, too fast for it to have come down from attic, so

smelled inside wood of window and odor very strong of same type I smell in

house, so now what? Do I have wood rot of windows I wonder? House built in

1930's. I see wood grain in many windows but also many where I can not see wood

grain but wood is blackish. If I put replacement windows in, would that solve

it, or are more major repairs necessary.

House is beginning to cost me too much but I have a foot injury that is healing

slowly so it would be hard to leave house now.