Personally, as a scientist, I object to the idea that any and all "chemicals" are bad. Chemicals are the very building blocks of life and indeed everything on this planet, and to simply say or imply that "chemicals are bad" is an incredibly simplistic and uneducated way of thinking IMHO.
Now, one can say "harmful chemicals" or "allergens" or even "things I wish to avoid" to define certain substances and I have no issue with that at all. My husband breaks out with contact dermatitis with commercial detergents or whenever he stays in a hotel, indeed that is why I make our own laundry soap now. I don't even know what he is sensitive to, and we don't feel the need for expensive testing, but I wont simply call it "chemicals". Thats my bugbear