If you are getting a buzz, then I'd say you need more ventalation for sure. Try spraying near a window and use a good fan for circulation. Also check this product, its got good reviews, nice decent mask; http://www.amazon.com/gp/product/B000FTEDMM?keywords=hepa filter face mask&qid=1444138797&ref_=sr_1_2&sr=8-2