An online US retailer is making no apologies for marketing Ebola-themed costumes for grown-ups looking to add some shock value to their Halloween party get-ups.

Brands On Sale has sold hundreds of men's white Ebola containment suit costumes - complete with face shield, breathing mask, safety goggles and latex gloves - for around $87 a pop.

CEO Johnathon Weeks says they can barely keep them in stock.

And, responding to customer demand, it has added a "sexy" version for women which substitutes the coveralls with a white short-sleeve nurse's mini dress.