"Crash Lander" wrote
I have heard here in Australia, that baby formula and milk is allowed,
provided the carer or parent drinks a portion in [front] of the security
personnel. Not sure how true it is though.

This very effectively prevents terrorist A from carrying on board deadly
poisonous (but slow acting) and highly explosive component A and terrorist B
from doing the same with similar component B. After all, who would drink a
deadly poison?