You can notice black spots in your bathroom or other places where steam doesn't ... | Hacker News

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the_clarence on Nov 14, 2018 | parent | context | favorite | on: Build a do-it-yourself home air purifier for about...

You can notice black spots in your bathroom or other places where steam doesn't escape properly. I noticed it on my mattress also. I don't think I have any health issues because of that, it was 5 years ago, but it was rough.

marco1 on Nov 15, 2018 [–]

Mold is not always black, is it? It can have other colors as well, e.g. yellow.

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