• Question: why do factories smell so bad?

    Asked by anon-177154 to Andrew, Becky, Daniel, Helen, Nicola, Urslaan on 18 Jun 2018.
    • Photo: Daniel Marsh

      Daniel Marsh answered on 18 Jun 2018:

      Most industrial processes cause some form of pollution and factories can use all sorts of chemicals that smell bad. Moe concerning is that a lot of pollution has no smell at all so you do not realise that it is there.

    • Photo: Urslaan Chohan

      Urslaan Chohan answered on 18 Jun 2018:

      It depends on what they’re producing. Often chemicals are used that contain things like sulphur and ammonia, which release bad smells.

    • Photo: Helen Littler

      Helen Littler answered on 19 Jun 2018:

      You haven’t smelt anything bad until you’ve been to a sewage plant. Horrific smelt but brilliant science because they extract out all the good stuff to be used a fertiliser and treat what is left so that it can return to the water system.

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