Mysterious brown stains !

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I woke up this morning with these random brown stains/marks on my hand. I tried google and no luck. Does anyone know what this may be? I legit thought I slept with

this is a picture of the room as you can see the bathtub is in the room so that is weird - Picture of Tides Inn & Suites, Port Townsend - Tripadvisor

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Mysterious Brown Stain : r/delta

Mysterious brown stains?? They're on multiple garments from

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Premium Photo Close up background texture of vintage weathered