Denver Post, 21 Jan 2013 – I appreciate the thoughtful commentary by Patrick J. Kennedy and Kevin A. Sabet. Marijuana is not cotton candy. Jailing people for using or possessing does not prevent its sale or use. One of my concerns: secondhand pot smoke. How do we protect people like me in a condominium from unwillingly sharing our neighbors’ pot smoke as it filters through our shared air? If limits are set for driving under its influence, what happens to drivers who have involuntarily breathed smoke at a concert or party? Medical benefits have been proven. Yet I question whether hazards are being as closely observed.