Back, a number of years before I was diagnosed with asthma, I had a violent respiratory problem caused by a room freshner spray. This particular product contained formaldehyde, and I suspect that a majority of them also contain formaldehyde -- I ended up in the ER on oxygen and injected medication. I also had another instance of exposure to room freshner sprays which ended with the paramedics being called. There have been other incidents with room freshener sprays -- for 30+ years, my employer would not allow them in the office where I worked, or in an adjacent condominium office unit which he owned. Anything airborne that contains formaldehyde can be very dangerous for anyone -- but in the early 1991 I was diagnosed with adult onset asthma. Suffice it to say, we don't allow them in our house, nor do I allow smoking in my house. There is nothing more frightening than being unable to breathe, I've been there done that!