Sounds and smells are vivid triggers for me both in the csa and combat. When I first notice these sounds and smells now, I realize the effect it will have on me and change my thinking to something current, something in focus right at that minute and this helps me avoid the memory trip that comes with the sounds and smells. I also use a lot of self talk, just saying something like, "I'm in the here and now. What happened was a long time ago. I'm safe now." This combination works well for me, but it was not recommended by professionals, so I don't know if it works for others.

I don't try to think of the sounds and smells as something else. I just try to focus on something else until that event passes. The first time these triggers occurred was a big surprise, but things have improved.

Sorry you're having to deal with this
Troy