Interesting. So that trope of smells being strongly connected to memories never really happened to me. I didn’t know this was also part of aphantasia.
I definitely have memories linked to smell, but I can't imagine or remember and pull them up on demand, I am reminded of them when I detect that scent. I can make myself imagine/remember sourness though, but not other flavors. Just thinking of lemon, citrus, pickles, etc. makes my mouth water and start tasting sourness.