Yeah, Google Translate also translates carpet as "ковер" instead of the proper spelling (ковёр), and it actually does translate "carpet mold" as "ковер плесень" (instead of a more proper translation like "ковровая плесень" or "плесень в ковре").
I'd say it's 99% google translate
Fair enough. I tend to use it because it just reduces scanning ambiguity when reading text quickly.