Very good choice and reasoning.
Cigarette smoke, compared to Marijuana smoke, is more harmful.
"Cannabis smoke contains cannabinoids whereas tobacco smoke contains nicotine. Available scientific data, that examines the carcinogenic properties of inhaling smoke and its biological consequences, suggests reasons why tobacco smoke, but not cannabis smoke, may result in lung cancer."
"...while both tobacco and cannabis smoke have similar properties chemically, their pharmacological activities differ greatly. Components of cannabis smoke minimize some carcinogenic pathways whereas tobacco smoke enhances some. Both types of smoke contain carcinogens and particulate matter that promotes inflammatory immune responses that may enhance the carcinogenic effects of the smoke. However, cannabis typically down-regulates immunologically-generated free radical production by promoting a Th2 immune cytokine profile. Furthermore, THC inhibits the enzyme necessary to activate some of the carcinogens found in smoke."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1277837/
And before anyone says anything, I am not promoting smoking Marijuana.
If you're located in an area that permits Marijuana use, do it the old fashion way. Roll a joint or use a bong.