Nope, I think it's very common, especially in grief. I'll share two personal examples.

With my dog, he passed away in oct of 2017 and was the only dog my family ever really had that liked toys so it took me so long to go to a pet store at all but when I did, and I saw the toys for the first time, I stopped, I could feel my heart sink and I walked out. I started crying. It was weeks before I went back to a pet store but since then, I avoid the toys at all costs. I still cant. I heard someone squeaking one once and nearly threw up because of the sadness.

With T, it was within the week of therapy ending and someone came in my line at the store and bought bags of his favorite candy. I obviously couldn't start sobbing then or run off, so I finished the person and asked to use the restroom, I went in there and cried.... over candy

With T there is STILL so many things that make me think of him. IT's so so hard. I understand, even though my T isn't dead, in a way, it feels like he is I mean, who knows if I will ever see him again