As an idea, it's quite clever, but as a scent, it's extremely disappointing... It smells like something between sweat and mold... I took it out of the air conditioner and it took a week for the smell to "recover"... no matter how much I cleaned it, the smell remained... Also, I wouldn't say it's easy to install, as it's not flexible and 90% of air conditioners are curved... I barely stabilized it...