In Dominican Spanish, "chi chi" just means "baby" while it means something horrible elsewhere. And I would say a similar idea might be true here too considering where "chata" came from.

In Argentina the portable toilets used by people lying in bed are called chata. Also pickup trucks.

It's a house, or a cottage specifically, in Polish. Fun fact is it uses ch digraph, which is for "unvoiced h" and how we spell both ch and h these days. Naming is hard.

I ignored the post at first because chata is so close tp chat and I though this is yet another one of those llm based "languages".

It reminded me of orxata, which now gives me a craving