how are they protected for their uniqueness?
Perfumes are best preserved when kept in light-tight aluminium bottles or in their original packaging when not in use, and refrigerated to relatively low temperatures: between 3–7 °C
Perfume
Perfumes are best preserved when kept in light-tight aluminium bottles or in their original packaging when not in use, and refrigerated to relatively low temperatures: between 3–7 °C (37–45 °F). 
what are the symptoms of a systemic anaphylactic reaction It presents many different symptoms over minutes or hours with an average onset of 5 to 30 minutes if exposure is intravenous and 2 hours if from eating food. The most common areas affected include: skin (80–90%), respiratory (70%), gastrointestinal (30–45%), heart and vasculature (10–45%), and central nervous system (10–15%) what are the risks of this? People with atopic diseases such as asthma, eczema, or allergic rhinitis are at high risk of anaphylaxis from food, latex, and radiocontrast agents but not from injectable medications or stings. what is the former mentioned disease? Asthma is a long-term inflammatory disease of the airways of the lungs how is alcohol connected to this disease? Alcohol may worsen asthmatic symptoms in up to a third of people what are the medicines used in its cure? Medications used to treat asthma are divided into two general classes: quick-relief medications used to treat acute symptoms, how can you prevent this disease? By decreasing tobacco smoke, air pollution, chemical irritants including perfume, and the number of lower respiratory infections, etc. what is the third one mentioned here? It is a mixture of fragrant essential oils or aroma compounds, fixatives and solvents, used to give the human body, animals, food, objects, and living-spaces an agreeable scent does it have any natural content? Yes, essential oils, absolutes, concretes, or butters depending on the amount of waxes in the extracted product
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Perfume [SEP] Preserving perfume
Although it is difficult to completely remove oxygen from the headspace of a stored flask of fragrance, opting for spray dispensers instead of rollers and "open" bottles will minimize oxygen exposure. Sprays also have the advantage of isolating fragrance inside a bottle and preventing it from mixing with dust, skin, and detritus, which would degrade and alter the quality of a perfume. There exist several archives and museums devoted to the preservation of historical perfumes, namely the Osmothèque, which stocks over 3,000 perfumes from the past two millennia in their original formulations. All scents in their collection are preserved in non-actinic glass flasks flushed with argon gas, stored in thermally insulated compartments maintained at in a large vault.