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Fragrance Thermometer design shows temperature changes by spraying out different fragrance smells. The top works to obtain the heat, then the electric sensor will determine which fragrance tablet to use. In other words, this combination of air fresher and normal thermometer tells you how hot or cold the environment is just by taking a simple breath. Also, the portable size allows you to easily carry it as a normal perfume or an air fresher when plugged into the base. Freezing cinnamon, melting rose, you pick