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No one's studying this from a medical standpoint that I know of. But of course people can get high from secondhand smoke. For one thing, anyone in a confined space isn't just breathing in exhaled smoke that's already passed through the active smoker's lungs. They're also breathing in primary smoke from the joint (or whatever) is being burned nearby. Flight attendants got cancer from secondhand cigarette smoke, or at least they did back when smoking was routinely allowed on airplanes. The atmospheric smoke contains the same crap that active smokers are breathing in. Plus exhaled weed smoke doesn't come out stripped of its active ingredients. So people who are in the same vicinity as smokers are getting two types of exposure that could lead to getting high.
No offense Dave but you don't know what you're talking about. Secondhand smoke from a burning material released into the atmosphere is not the equivalent of direct inhalation via a smoking apparatus such as a pipe or rolling papers. And you're confusing basic toxicity of tobacco with the concentration of THC required when released into the open environment for one to become intoxicated.
But that's ok, roll yourself another one. A big phat one. And don't wave it around in the air and pretend to get high, hit that baby.