I'm convinced we have it in the basement. We run a dehumidifier all summer long, but every time it rains water just pours through the wall. And the leak is right next to our bedroom.

Given how drafty our place is, I wouldn't be surprised if the spores are all through the house by now.

*sigh* More incentive to get the upstairs bathroom installed so we can rip the walls out downstairs and clean it up.