Y'all last night I realized that being physically hot for extended periods of time is literally a trigger, in that it cues me to remember and be emotionally braced for some fairly traumatic shit that happened when I was hot like that last... which means everything is worse and more stressful while it's happening.
If the only thing to do about it is to cease being hot, I have real bad news for my brain about "global warming" and "living in Minnesota (where there hasn't been as much investment in nuclear level AC)". Like, shit, at least you can ask dudes to clear out of your spaces without invoking King Canute quite that clearly. It's not any more reasonable, but it's marginally less absurd!
No, the thing you do about triggers is you learn to account for them and you practice learning to defang them. That means you gate your own exposure to triggers to minimize the odds of getting blindsided, but you also deliberately spend time around your triggers un-learning the association between them and the scar of your stress. Because asking half the world to avoid you for the rest of time is intrusive and unreasonable, just like asking the world to stop changing climate because that's really inconvenient for me is unreasonable.
It sucks, but that's life! Being aware is only the first step to healing, baby. The rest is like PT: long, shitty, and requiring both a good spotter and a lot of crappy effort to get anywhere with it.