A woman exhales while smoking marijuana during the annual 420 marijuana rally on Parliament Hill in Ottawa, Canada, Wednesday, April 20, 2016.
A woman exhales while smoking marijuana during the annual 420 marijuana rally on Parliament Hill in Ottawa, Canada, Wednesday, April 20, 2016. Justin Tang AP
A woman exhales while smoking marijuana during the annual 420 marijuana rally on Parliament Hill in Ottawa, Canada, Wednesday, April 20, 2016. Justin Tang AP

California Weed

April 21, 2016 10:00 AM

Secondhand pot smoke can give you more than just a contact high

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