Interesting that you should ask that question, I've actually never been asked before. No need to apologize
Uh, I really don't dislike any of them, but if I had to choose...I'd probably say...Paras, maybe? I'm not gonna lie, I spent a lot of time making that decision...yeesh. Not gonna lie, I'm actually not terribly fond of mushroom Pokémon, as I actually considered Shroomish too. That isn't to say that I dislike Parasect and Breloom, as I actually like them.
Well, that was a little long-winded explanation.