Well, I'll be darned.
Woke up this morning to a smoky, sweet scent that reminded me of burning incense. Now, I have been reading a lot about the Byzantine Empire but am not generally subject to olfactory hallucinations (crazier than a bedbug though I might be), so was a bit curious. Wandered around the house, then went outdoors to sniff around. Yes, the smell was everywhere.
A short time later, Pavel came downstairs. First thing he mentioned was the pretty but strange smell in the air. Wondered aloud on what was causing it. Nobody does leaf fires in the neighborhood - too dangerous with all the wood houses stacked on each other. Certainly wasn't a house (or more likely a series of houses - when one goes up here, the neighbors get hurt as well), as we didn't hear any fire engines overnight.
Found out later that we were smelling (and still are smelling, though a bit less now) is ash from forest fires in Quebec brought down on the wind. Apparently, too, here in Southeast Middlesex, there's an air quality alert in effect until tonight.
Update - early afternoon (about 13:15 ish) - smell's gotten stronger and one can really see the haze. Any outdoor work that needs to get done will be done out back under the trees, I think.
(18:30) - air quality has improved slightly, but is still pretty hazy out. Took a walk around the neighborhood for a couple hours and didn't have any trouble breathing. Eyes are kind of bothering me, though.