Vinegar smell will very quickly evaporate. I've even used undilluted ACV now and then with no smell after and no problems. I've concluded though that baking soda is not for me and ACV will not do the trick without it. I might try WEN. I have longer hair and so I generally can wash it every other day or every third. My scalp would probably thank me if I went a little longer, but I like showering and feeling clean and if my hair is wet anyway, then I also would prefer to have it clean too! My main problem is that due to frizz, I have to use product of some sort in my hair and after two days I don't want to add more. Sometime I can get away with just spraying it with water and rescrunching, but sometimes it fuzzes up a bit. I haven't been able to bring myself to do the olive oil treatment for scalp yet as I just can't imagine how much effort it will take to get it back out of my hair.