Heater odor?

[whimsey]

Our 2017 2.3 EB XLT seems to have an odor, similar to wood smoke coming out of a chimney, with the heater on. It's stronger if you use the remote start in real cold temps. It seems to lessen when you start driving after using the remote start. But even just using the heater in the upper 30's while driving you can faintly smell it, but not consistently, strange. It didn't seem to do it last winter when we got the new Explorer. Before we take it to the dealer I'm curious whether anybody else experienced this and if so how was it resolved. Thanks!

Whimsey

 

[1995E]

that’s odd. Bring it to the dealer. Might have something burning in your engine compartment

 

[Odrapnew]

Or, possible that leaves got to the heater core. Rodents?