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  2. Air freshener - Wikipedia

    en.wikipedia.org/wiki/Air_freshener

    Air fresheners from Febreze. Air fresheners are products designed to reduce unwanted odors in indoor spaces, or to introduce pleasant fragrances, or both. They typically emit fragrance to mask odors but may use other methods of action such as absorbing, bonding to, or chemically altering compounds in the air that produce smells, killing organisms that produce smells, or disrupting the sense of ...

  3. Little Trees - Wikipedia

    en.wikipedia.org/wiki/Little_Trees

    The city's mayor tries to take on the smell as he walks into the scene with a tree-shaped air freshener tied to his nose. But the stench proves too powerful when his air freshener turns into soot. [21] In the Sloth scene in the 1995 film Seven, several 'Little Tree' air-fresheners were suspended in a room to mask the smell of the emaciated body ...

  4. Fragrance extraction - Wikipedia

    en.wikipedia.org/wiki/Fragrance_extraction

    Although highly fragrant, concretes are too viscous – even solid – at room temperature to be useful. This is due to the presence of high-molecular-weight, non-fragrant waxes and resins. Another solvent, often ethyl alcohol , which only dissolves the fragrant low-molecular weight compounds, must be used to extract the fragrant oil from the ...

  5. Volatile organic compound - Wikipedia

    en.wikipedia.org/wiki/Volatile_organic_compound

    The strong odor emitted by many plants consists of green leaf volatiles, a subset of VOCs. Although intended for nearby organisms to detect and respond to, these volatiles can be detected and communicated through wireless electronic transmission, by embedding nanosensors and infrared transmitters into the plant materials themselves.

  6. Potpourri - Wikipedia

    en.wikipedia.org/wiki/Potpourri

    Potpourri has been used in rooms since ancient times, in a variety of ways, including just scattering it on the floor. In early 17th-century France, fresh herbs and flowers were gathered—beginning in spring and continuing throughout the summer. The herbs were left for a day or two to become limp, then layered with coarse sea salt. The aging ...

  7. Airing - Wikipedia

    en.wikipedia.org/wiki/Airing

    As exhaled breath is at about 100% humidity, breathing in a room will encourage condensation. A human body heats and humidifies clothing it is wearing. Airing clothing after wearing dries it out again. [2] Airing is used to reduce smells [2] [3] and allow clothing to be washed less frequently. [4]