NORWALK - School officials in Norwalk are warning parents about a dangerous substance they say students are smoking as an alternative to marijuana.

Briggs High School Principal Alaine Lane says a student was hospitalized after smoking "herbal incense."

Experts say the drug is not only more potent than marijuana, but when teens see it on store shelves, they think, "it can't be that bad." They say the substance is marketed as "incense" under names like "K2" and "Mr. Nice Guy," and carries a warning that it should not be consumed or inhaled.

Some states have banned the substance altogether, and after seeing the effects first hand, Lane says Connecticut should follow suit.