Triggers can be positive - a smell reminds someone of something and that triggers a good thought or memory or brings back a nostalgic moment.
In Intensive Outpatient, the instructor used the word "reggirt" which is trigger backwards just so it would not trigger people (then he went on to use actual words defining horrid moments that send me running from the room )
It is good to recognize that "trigger" doesn't have to be a bad thing and that yeah, I think of our switching as more of being cued: to drive, to shop, to put our "mask" on so others can't see us, to be real with friends. Whereas our 5 senses give triggers that can bring up good or bad feelings.