Noisy environments are the worst for me, but just certain noises. A  crowded restuarnat with lot's of people talking, laughing, especially  women and kids and loud drunk guys. Even with a group of 15 or 20 like  after a meeting when people socialize, all the different conversations  are all competing for my attention and I can't take it. I get  overwhelmed and I literally feel like i am being attacked, Physically  assaulted. I get that flight or fight response. Also low frequency bass  that I can feel in my chest makes me feel like that. Sudden noises might  make me jump a little, but I think my response is normal. 
 
  I also never get used to background noises, right now at my house I  can hear the traffic on the road 1/2 mile away. I can hear several types  of noises from the waste incinerator plant almost a mile away,  including a pulsating low frequency noise, I can hear my neighbors heat  pump, our network backup drive, the fan on our DVR, and a rattle in a  heating vent at the other end of the house. It always there, most people  filter out background noise after a while. 
Touch is the other problem for me, especially light touch, a soft caress  with fingertips can be almost painful, certainly irritating at the  least. A firm touch with the full hand is fine. If my partner touches me  with a cold hand or foot in bed, it feels like it is burning for a long  time afterwards. I will get violent if ticked, I have hit people, but  that may be related to something else. I don't usually feel clothes  tags, but if I do I can't tolerate  it even for a few minutes. After  wearing my bike helmet I can still feel it even hours after I take it  off. 
In a similar line of thought I have a very high threshold for pain, my  mother mentioned that about me when I was a child, and I have been told  this same thing by one nurse who realized I wasn't complaining about the  pain despite a serious injury. She was so concerned because she thought  I must be in shock not to be wincing when touched or crying out or at  least asking for pain meds. 
Certain smells will make me feel panicky and I have to get away from  them, especially florals, and wintergreen. But other smells can  overwhelm me as well.