Doctors who would never tell a patient to smoke cigarettes in moderation, they are a legitimate class 1 carcinogen, oddly say just that about an identical class 1 carcinogen, alcohol, and as recreational marijuana has become legal they have given it the same umbrella.
Legal or not, marijuana is a drug just like alcohol, and it includes the toxic smoke of cigarettes.
I am not a social authoritarian progressive so I won't tell you how to behave just because my health insurance premiums went up so 50,000,000 others could get it cheaper, but you absolutely should not be smoking marijuana around kids. It ain't the 1980s, hippie.