THC does not cause cellular mutation.
and no you probly would not be the same. occasional use might be somewhat non harmfull for a pregnant woman and fetus
but the inhilation of CO, and CO2, would reduce birthweight and reduce overall o2 blood stats.
and while THC isnt a mutagen, most commercial pesticides and fertilizers can be, especially if incinerated and inhaled.
and no in many cases you would not know or taste such substances.
and just cuz the label says ORGANIC does not mean its safe to ingest, heres a short list of organic substances you dont want to ingest, feces (very organic), Ricin (see lethal poison can be organic too), botulism (bacteria is very organic).
so dont say your damn hippie sprays are safe, NOBODY makes ANY thing to spray on your plant thats safe to smoke
NOBODY.