How do I get over a phobia without facing it?

I AM SUPER DUPER EXTREMELY SCARED TO FREAKING DEATH OF VOMIT!!! I’m scared of people who vomit people who think they are going to vomit I’m scared of vomit… well vomit in general. Like baby spit-up does not bother me but if a baby like shows me what it ate I will freak out… My motto is what goes down your throat should stay down your throat! Like in my school for example the stomach flu was going around so I was like a germo for like a month…LoL… I’m really not scared of anything else. It scares me to the point of running away and screaming and crying and once I was shaking so badly my mom thought I was having a seizure… So I really want to be a Neo-natal Intensive Care Unit Nurse but my mom said I will have to be an RN (registered nurse only) for a while which means I will have to deal woth vomit. So I do not want to do that RN thing. How do I rid my phobia without facing it like without being around it? I really want to know!!! So please help me and can anyone say they have the same phobia? I’ve had it since I was like 4 1/2 and it was REALLY bad then it’s gotten a little better but not a lot like when I was 4 I couldn’t even stand vomiting when I was the one commiting the crime! So please help me!!!