If a man is using drugs such as cocaine and or pot, and he has intercourse withg a women unprotected can that women fail a drug fail a drug test

No but... ...It does make it more likely that the man will die during sex. Cocaine is a potent vasoconstrictor which means it cuts off blood supply. This man should consider getting professional help asap (counseling, meetings, possibly an antidepressant like welbutrin) so that he and the woman can enjoy a healthy sex life for years to come.