I Have a Suggestion for Similar Worlds

I have no clue what section to put this under, but am I the only one wondering what the obsession with ammonia is on here? There are a tonne of them each day and I honestly have no clue what they're about 😂😂

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SW-User

Pretty impressive

http://cdn2.hubspot.net/hub/62003/file-26213755-jpg/images/sludge_dryer_scrubber.jpg?t=1461085397555&width=270&height=355

Haha