i was up a little later tonight, and am now done eating and ready to start the day.
i haven't smelled any drugs wafting up here yet tonight, so hopefully the adjustments i made yesterday afternoon are good enough to allow me to focus for the day. i've also left the cabinets open. so long as it's cold out, the cold air flowing down should both clear out the passageways a little bit and keep any smoke down there from rising up.
there are other explanations, but let's hope i've got a handle on this.