No, it wasn't my imagination [1]:

Heavy smoke is blanketing many parts of West Knoxville Thursday afternoon.

Rural Metro authorities tell 10News that the smoke is coming from a "controlled burn" at a construction site off of Everett Road.

The "controlled burn" must be pretty big; the smoke is quite noticeable in the Gallaher View area.

UPDATED:

However, Knox County Health Department air quality inspectors sent out to the scene were unable to find a fire at that location.

The National Weather Service now confirms that the smoke's source is the wildfires burning in Georgia.

Weird. If this is the Georgia smoke, where did the first report come from?