A Japanese complex Riche Tamagawa Riverside has had enough of the sneezing, congestion and red noses that must have been running rampant throughout the building, as employees recently installed an "air-shower" near one of the entrances that blows dust, pollen and other allergens right off residents' clothing. Frequent travelers may be familiar with these compressed-air showers from certain airport security screening stations, where the machines are used not to keep your flight sniffle-free but to ensure that you weren't playing around with explosives before boarding. The 12-nozzle system at the Tokyo location has proven so popular that building owners are considering deploying the units to other housing developments as well, causing hay fever sufferers to rejoice.