Freaked out on a total stranger!

So this morning I'm on the train on the way to work, and a woman sits down next to me and begins the whole hacking cough and faux sneezing bit. I pretty much ignored her for most of the trip, until she turns and "sneezes" directly on me, at which point I completely flipped on her and gave her a speech about how much shes being ridiculous and educated her about TMAU and directed her to the ABC interview that was done a few years back. She responded by telling me that 'maybe I shouldn't leave the house smelling like garbage and referenced me to good home-training and the hygiene aisle in CVS!' OMG!I lost it you guys! I got in her face and proceeded to yell about the mental and emotional damage people like her cause and so on so forth. Then I showed her my wrists(covered in scars) and said 'is this what you want?' She closed her mouth immediately and apologized, and rushed off the train. In a way I feel bad, but I got to live out a fantasy that a lot of us think about all the time. I don't know was I wrong or just okay?