I used to be extremely sensitive to seeing/hearing/ smelling vomit. I would instantly gag. However, it doesn't bother me anymore and here's why: I have 3 little ones. I have been spewed on so many times in the last 3 years that I have lost count. At first I would gag and puke myself, but then I somehow got desensitized to it. However when I see or hear strangers wrenching, I am repulsed and I immediately gag.