I had never heard of it. What is wrong with me? Especially since I share an apartment with house rabbits who have been trained to use a litter box. The apartment doesn't smell, unless their dad needs to empty the litter box; but when it has gone past the time for it to be emptied, there is no getting around the smell. Point is, because I am sensitive to the smell of their litter box when it is past time for it to be emptied, I am therefore quite certain that I am not so crass as to have become accustomed to their smell all of the time.
Your presentation of the research in your thread is indeed convincing as to the dangers posed by this product; however my contention is why do we allow the marketers of these products convince us that we have a need to buy their products when in reality we probably do not. The power of advertising and its' hold over the unsuspecting public is a direct threat to our civilization in more ways than just the pollution of our immediate environment. For this reason, along with many others, I am offended by the way that advertising attempts to infiltrate my life.