prevent wild contagions

Hi, I live in a very large house in an isolated downstairs room. I am very cautious about any potential dangers and toxins. I was wondering about cleaning products. If someone upstairs uses bleach, I would probably only smell it if it is near the staircase located near my room entrance. Can...

Bird flu aka Avian flu is in my area of the Pacific Nothwest. There is a confirmed report 12 miles from me in a domestic flock. There are several protected wetlands for local and migratory bird species, one of which is 3 miles from my house. Many people here have chicken and/or duck flocks. My...