Without any facts to back your statement up, it really falls apart. Unless you can cite sources that state a regular modern house contain as much bugs, fungi and germs as a plant house would, it's just like saying "you think the road outside your house is well trafficked? There are cars driving on the autobahn too, it's no more trafficked than your road."
Of course, it goes the other way as well. Shady's statement is just personal opinions and guesswork unless proof is presented.