Vape ’em if you got ’em.

Smokers opposed to a proposal to snuff electronic cigarettes from public places filled a City Council hearing room Wednesday and puffed away.

With no law on the books to prevent them from electronically lighting up at City Hall or anyplace else, protesters defiantly powered up at the seat of city government, making their point under a cloud of vapor smoke.

“The facts are that this isn’t smoking,” said Jesse Gaddis, a representative from Brooklyn-based Bedford Slims, an e-cigarette company, as he exhaled wasps of white mist during his testimony. “This is vapor.”

At issue is a City Council proposal to ban the popular electronic devices from bars, restaurants and any public places that already outlaw traditional cigarettes.

Council supporters, including outgoing Speaker Christine Quinn, say the city has to regulate e-cigarettes because their use has exploded among kids.

They also argued that business owners would have a hard time distinguishing between the real thing and e-cigs.

Health Department Commissioner Dr. Tom Farley said that because the e-cigs are unregulated, consumers may not know what they’re inhaling.

“We don’t know how much nicotine is in them,” Farley said.

But e-cig supporters say the battery-powered butts are a godsend.

“I started smoking Parliament Lights when I was 12 and I was smoking a pack a day by the time I was 16,” said iLona Orshansky, 29, of Fort Greene, who owns Vapor Lounge NY in Williamsburg. “I quit 10 months ago. I vape a tobacco flavor. It tastes like a Parliament.”

“E-cigarettes have the potential to be a public health miracle,” said Dr. Gilbert Ross, executive director of the American Council on Science and Health.

He cautioned that banning e-cigs could encourage people to go back to real cigarettes.