How do I get over my aversion to alcohol?

I do not drink and I am not looking to change that, but I have these visceral feelings about alcohol that I cannot shake. I have a nasty history of alcoholism in my family which is why I avoid alcohol. I simply don’t know if I have the tendencies. What I want to change is how I react to other people drinking alcohol. When my boyfriend or my friends or even just kids who live in my dorm drink, I don’t like it and feel bad that they are doing it. I know that this is illogical and silly because most of the time, they are not drinking harmful quantities and they don’t get into cars and drive or even make very stupid decisions. I was just hoping the collective had any thoughts on how I can do away with these irrational feelings.