they are passed to the fetus and cause imbalanced compounds that effect DNA
Absolutely YES! Substances of good/bad can be transported from what is inhale by the mother to the fetus by the process of "blood flow from the mother to the fetus" or entering the umbilical cord to the fetus .
blood flow from the mother to the fetus
yes.....it can
The fetus is not in the bowel, so, no. If the fetus has been borne, then still, no.
No, they are safe.
Not likely.
It may not harm the fetus but will harm YOU for sure. Say NO to 'drugs'.
trauma, toxins, and malnutrition.
no one knows
No
microorganisms can harm animals by infecting them, releasing toxins inside of animals when consumed, or causing malnutrition.
toxins can harm the brain by eliminating brain cells. say someone inhales a certain chemical. it may not kill them but they will lose brain cells. too much of one chemical could be fatal.