Cody Park exhales a cloud of marijuana smoke after taking a hit on a bong at the first day of Hempfest, Friday, Aug. 16, 2013, in Seattle. Thousands packed the Seattle waterfront park for the opening of a three-day marijuana festival — an event that is part party, part protest and part victory celebration after the legalization of pot in Washington and Colorado last fall. Hempfest was expected to draw as many as 85,000 people per day. (AP Photo/Elaine Thompson)

Is second-hand pot smoke bad for kids?

It has been proven that smoke of any kind can carry dangerous and potentially cancer-causing materials. But that is currently Oregon’s only …