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Here's maybe a different way to think about 到. In the context you mentioned, 到 here means to have done said action. The state of the action has been brought into existence; it is now a fact. So think of it more like: 看到 = have seen 闻到 = have smelled 吃到 = have eaten/have tasted That's why in English we say "I can see/smell/taste...", like "I can taste ...
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