Cathal Joseph "Carl" Smyth, also known as Chas Smash, is an English singer-songwriter and multi-instrumentalist. He was the secondary vocalist, trumpet player and dancer for the English band Madness from their inception in the late 1970s until 2014.

"Our House" is a song by the English ska and pop band Madness and was written by second lead vocalist Chas Smash and guitarist Chris Foreman. It was released as the lead single from their fourth studio album, The Rise & Fall, on 12 November 1982. The song charted within the top ten in several countries, and it was the band's biggest hit on the Billboard Hot 100. It won the category Best Pop Song at the May 1983 Ivor Novello Awards.