Prawns left TV presenter Lee McKenzie unable to breathe: Have you got a killer allergy you don"t know about?

Prawns left TV presenter Lee McKenzie unable to breathe: Have you got a killer allergy you don't know about By Martha Roberts PUBLISHED: 01:15 GMT, 22 May 2012 | UPDATED: 01:15 GMT, 22 May 2012 'I had no idea I had an allergy to shellfish,' said BBC Formula 1 presenter Lee McKenzie As A BBC TV Formula 1 presenter, Lee McKenzie is used to high-octane action.