I am conscious, and I am made of cells, and presumably the interaction between those cells somehow results in my being conscious.

I don't know how my cells interact, but that doesn't prevent me from being conscious. Do my cells know that they somehow result in consciousness? If they do, how do they feel like? If they don't, what reasons do I have to deny that, since I feel nothing like "being a tiny functional part of a planet-level consciousness, or something", such a consciousness exists because of the interaction between me and everyone else, between us, for that matter?

I interact with other people in a lot of ways. Does that necessarily mean that some kind of consciousness emerges at a different level? And if it does, why would I feel anything about it at all?

How do I know that two or three, or thousands, or millions of my tiny cells aren't asking "who are you, big boy?" And, if I wanted to respond loudly, just in case, how should I do it for them to hear the answer?