On the eBay website an enterprising celebrity spotter is selling a jar of fresh air allegedly breathed by stars Brad Pitt and Angelina Jolie, for $US15,000.

"Be the first to own this jar of Celebrity air, which may contain air molecules that came in direct contact with Angelina Jolie and Brad Pitt!!", read the seller's announcement on online auctioneer eBay.

The starting bid was just $US9.99 and since Friday there have been 53 bets, who had pushed the price of the jar to $US15,099.

"We are not guaranteeing this air sample contains air molecules that came in contact with any celebrity epidermal layer or respiratory system, but the sample was captured in proximity of the celebrities and air molecules that did come in direct contact," the seller said on eBay.