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.