Rep. Wayne Harper, R-West Jordan, tried to lift the age to 12, but not because he supports the idea. He spoke of "infringing" on parental and property rights.

And Rep. Stephen Sandstrom, R-Orem, said he opposes smoking in front of children, but said the bill puts the state on a "slippery slope." Next up, he wondered: banning smoking in homes, regulating obese children's diets? "We're mandating behavior. We're mandating personal responsibility."

Rep. John Dougall, R-American Fork, also opposed the bill, which has passed the Senate and now must be approved by the full House.

Sen. Scott McCoy, D-Salt Lake City, equated smoking in a car to smacking a child. He told lawmakers to vote on his bill based on what it says. The slippery slope stops "where a majority of this Legislature says it stops."

- Heather May

SB14

Would make smoking in a car when a child is present a secondary offense.