Dead mouse

On Saturday 3rd January 2026 I went to Canal Walk Checkers to go and buy a camping chair I ended up buying 3(bushbaby)2 green ones and 1 red one, on Monday 5th on January I go to the pools I open the 2 green ones all good but when I opened the red 1 it had this awful smell in it as we were taking it out of the bag. I opened the chair and found the source of the smell it was a dead mouse. I am now unable to use the chair because that smell is so overwhelming and down right disgusting thinking of it.