According to "El Pais" an a340 -600 heading México from Madrid was obliged to make an emergency landing in Lisbon because of smoke in the cabin. Nine of the 288 passengers were injured in the evacuation, one seriously. One of the nine was gravely injured and had to be operated in hospital. The airport was closed for four hours as a result of all this.
Don't get excited please if any of the above details are wrong. I offer them as a rapid translation from a reputable newspaper, nothing else.