Why does alcohol disgust me so much?

I use to get so drunk avout 3 years that i would throw up and everytime it happend i would get more and more disgusted by alcohol and now its becoming a problem because at social gatherings or family gatherings i cant even drink a sip without wanting to throw up even just smelling it , is it a mental issue do to me remebering when i use to get drunk or it a physical pproblem in my body? I dont get allergys or rashes or anythibg i just get nauseas , feeling dizzy thirsty , it never happend to me before