FORT WORTH, Texas » Laws mandating stores sell only cigarettes that are slow-burning and fire-safe went into effect in five states on New Year's Day.

Delaware, Iowa, Oklahoma, Pennsylvania and Texas joined 17 other states Thursday in mandating the fire-safe cigarettes. Fifteen other states, including Hawaii, have laws that will take effect this year or next, according to the Coalition for Fire-Safe Cigarettes.

The paper on these “;fire-safe”; cigarettes is thicker in two separate spots so they will go out if not puffed when they burn to these areas. The idea is to prevent fires caused when cigarettes are left unattended.

Critics say that the fire-safe brands taste different and can extinguish a cigarette before a smoker is done smoking it.

About 800 Americans die each year in fires caused by careless smoking and the coalition estimates that number will be reduced if at least half the states pass the law.

“;There has been a rash of smoking materials deaths,”; Oklahoma Fire Marshal Robert Doke said Monday. “;A cigarette will fall into overstuffed furniture or mattresses when people fall asleep, or it rolls off an ashtray and on to the carpet, then the possibility for ignition happens.

“;This cigarette is supposed to snuff out before it can cause enough heat to start a flame.”;