Hello. I just wanna ask because i have dollars but there are stain on them . Is there any chance to change them .many foreign exchange didnt want to change them
It depends - on the stain size/type, how many notes are affected, denominations of the notes, where you're looking to exchange, and how etc.
For example, if the stain is prominent across a few low denomination notes, perhaps mix with cleaner, large denomination into two batches, and try two different exchangers. You may lose a little on commission due to smaller sum, but it won't be as much as them not alllowing the stained notes.
You could always take your chance in Old Dubai at some of the smaller exchanges, or even other sources - but be careful.
Worst case scenario, if you can't exchange them in Dubai, slip them in addition to (rather than instead of) some dirhams when you're tipping a taxi driver, waiter, housekeeping, porter etc. If they're worthless to you, they may be able to change them where you can't. If they can't they still get a few dirhams too, so nobody loses.
It depends on various things. If the stain is not that noticeable then I don't think they would reject it.
What sort of stain is it?
Many bank transit security boxes have a built in measure which will spray a permanent indelible dye onto the contents if a security guard is attacked, thus rendering the cash inside the box worthless to the thief or to anyone who subsequently receives the stolen money.
How did you acquire your Dollars?