Evil Apartment Dryer PART 2

AGAIN! 

I got some pretty minor blood stains on my white Ikea linen fitted sheet this weekend and decided to give them a wash only for them to come out of the dryer with GREY SPOTCHES! They came out of the dryer DIRTIER! Someone left some bleach in the laundry room that I might just snag (it's on the 'free stuff' shelf... idk if it's actually free though) and use to bleach them since I have no clue what the stain is. Sucks because my linens feel SO GOOD in my overheated apartment. Now I have to sleep on the weird waterproof cover that comes on my murphy bed mattress. Bleh.