A number of Dell users have complained that their Latitude 6430u Ultrabooks "smell of cat urine".
Dell engineers have ruled out biological contamination, and said the smell was not a health hazard.
The problem lay in the manufacturing process, which has now been changed, the company said.
Users affected by the issue should send their laptop back for replacement parts.
http://www.bbc.co.uk/news/technology-24741832
Too bad for Dell.