I like the concept. Containing the hawkng radiation tho... hm.
   [information never created or destroyed - I'm still skeptical on
   that one; but I'd like to believe it]

   I'd go more low-tech.

   Undercarpet vacuum. It would just feel like slightly enhanced
   gravity but would be 'just enough' to pull the allergens down,
   away from your nose and eyes and towards your feet.

   Your feet may smell but they won't sneeze.