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Rethink unnecessary room fragrances
Avoiding an unnecessary fragranced product reduces its material use and emissions at source.
What changes the result
Ordinary houseplants should not be presented as substitutes for ventilation or filtration.
Check what you already own before buying something. The benefit comes from repeated use.
References in the original project +
Wolverton/NASA (1989); Steinemann (2016) Building & Env.
These bibliographic references come from the original cards. They provide context; they do not validate every numerical assumption below.
