salt water vs mouthwash

I have this weird thing where if I dont like the taste of something my body will gag and it'll just spit out. I have it with medicines and fizzy drinks and some foods but also sadly mouthwash 😪 my wisdom teeth r coming through really early and ive been getting those white flabs where new gum is forming to make room (?? i think thats what my dentist said) and she recommended i use mouthwash and saltwater.

since I have that reaction with mouthwash would salt water be enough?? its mint mouthwash so is there any way to make the taste less while keeping the effect??