Carlill v Carbolic Smoke Ball Co product called the "smoke ball" and claimed it to be a cure for influenza and a number of other diseases. (The 1889–1890 flu pandemic was estimated to have killed 1 million people.) The smoke ball was a rubber ball with a tube attached. It was filled with carbolic acid (or phenol). The tube would be inserted into a user's nose and squeezed at the bottom to release the vapours. The nose would run, ostensibly flushing out viral infections. The Company published advertisements in the "Pall Mall Gazette" and other newspapers on November 13, 1891, claiming that it would pay £100
A Is for Acid he went about murdering for profit." However, the reviewer was critical of the film's lack of tension and its failure to analyse Haigh's psyche. The opening scene depicting Haigh's childhood was filmed in Saltaire, West Yorkshire. Later where John is shown courting Betty, the Hyde Park Picture House in Hyde Park, Leeds. The police station to which John takes Constance Lane to report her friend missing, was filmed at Wetherby Council Offices. A Is for Acid A Is for Acid is a 2002 British television film based on the life of the serial killer John George Haigh, known as the