The purpose of this prospective quantitative study was to examine primary caregivers' perceptions on the potential dangers of secondhand marijuana smoke on children and their knowledge of the health consequences of marijuana smoke. The sample included 33 primary caregivers in Los Angeles and Orange County, California. The online survey consisted of 25 multiple-choice questions.

The results revealed that 87.9% of the participants felt secondhand marijuana smoke is potentially dangerous to children. However, despite this high percentage of concerned caregivers, 90% of participants were in the low-knowledge category on the health consequences of marijuana. These findings suggest the need to provide better education to the public on the health risks for direct users of marijuana and cast light on the need to conduct further research on the potential dangers to children from secondhand marijuana smoke.