and, yes - i can smell. and taste. it doesn't seem to be that.
i just had a yummy bite of strawberry. mmmm.
i just can't smell any smoke, or any of the disgusting smells i was dealing with last year. so, what i'm getting at is that it seems unlikely to be related to gasses coming up from under the floor. that issue does seem to have been fixed.
i've been through this before enough times that i know that it's the dry & stagnant air causing both the bleeds and the migraines. he doesn't seem to have his a/c on, but he may be running a dehumidifier up there, and that may be the root cause.
the fan fixes it. i just need to fix the fan.
and hope it doesn't get too bad in the mean time.