One of my biggest triggers is scent. If i smell anything that reminds me of my parents, it sends me to tears and my emotions go crazy. They say scent is the biggest thing that triggers memory and it's so true. I can smell an old perfume and I could tell u what I was doing when I used to wear it. Same thing for my parents. Certain perfumes, cologne, foods, air fresheners, even cleaning products make me think of my parents. It's crazy.