My aluminum baking sheets have been out in the dishwasher.

Title implies that your baking sheets were damaged in the dishwasher. You cannot scrub them and you want a low odor solution. All you have left, really, is a replacement. That is unless you have someone else to scrub them for you. Still, I would recommend replacement because the harsh cleaners in a dishwasher will erode the anodizing layer on the cookie sheet.

Have you tried soaking them with dish soap and a dryer sheet over night? Usually the gunky stuff comes right off the next day.

https://www.hometalk.com/diy/clean/house/how-to-clean-your-old-cookie-sheet-25830730

thanks will give that a try

Try using Bar Keepers Friend, you can find it at Wal Mart or most any grocery store. Make sure you use the powder and not liquid.