Burnt Toast smell

About 30k 2014 PiP Base - Sat for the last 10 days outside (Bay Area, so apparently I missed lots of rain while I was away...). Turned it on this morning, turned on defroster and a distinct burnt toast smell occurred for 5-10 min before going away. Anyone ever have a similar experience or anything specific to check (other than bread in the engine bay...), I likely won't worry too much about it unless I notice it again.

 

I had my kid with me, and she noticed it too, so thankfully not mutual strokes.

Popped the hood yesterday when I got home, unfortunately found clear evidence of critters in the form of peanut shells all over the place. In our area, people throw them to the squirrels who bury them during the day, the roof rats then seem to get them at night...so I'm guessing a rat decided it was a nice place for a picnic. No sign of wiring damage that I could see, I know that can be an issue with rodents as well.

I shopvac'd it all up, then used the blower to blow out any bits from hard to reach places and will monitor closely going forward. I'm just due for 30k service, so when I check/replace the cabin filter I'll see if anything got in there. I did check the engine air filter and nothing was in there thankfully.