I think the key feature is _cooling_ the bed, with warming secondary to that. That arguably sounds like a great nicety to have, notwithstanding all the downsides mentions in the post.
So now your getting hacked and breathing in toxins while you sleep. Hacked up the arse and in the mouth too. Nice.
Yeah, no thanks. I try to make my bedroom as technology free as possible. Apart from a digital alarm clock; at night I put my phone on aeroplane mode and place it outside my closed bedroom door.
It's the best I can do with today's bullshit tech. I've never had a problem with not having a cold bed, so maybe it's the next best thing after the bidet.
Cold cannot be "made", as it's an absence of something (energy), nor can it "leak" as a result.
I take what you mean is that there will be a refrigeration loop involved, and in that, a refrigerant. Just like all substances, refrigerants can be toxic, sure, but that alone is not what makes a toxin [0]. It's also not a binary thing, and between air conditioning and refrigerators, an appliance like this I don't see why would stand out.
I further haven't got a clue what microplastics having been found to pass the blood brain barrier have to do with this, or how you're able to determine whether that applies to me or not, specifically.
