Unknown Foam on Engine Bay Floor

[iceapple]

The other day I opened the hood to do some cleaning, and found a large form-like stuff lying on the floor of my engine bay, approximately at the red rectangular in pic1. It seemed a bit out of place, so I took it out (pic2-3).
The car was a 2018 Ecoboost coupe. Do anyone have some clues about what it is, and how worried I should be?

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[Elp_jc]

That looks like house insulation man. You might have picked it up from the road.