A couple of months ago I decided to put an airfreshener in my 6 yo autistic’s room because it smelt like urine due to him wetting the bed a lot. The next day he turned from a calm placid little boy to an angry, tantrumy boy who would constantly punch himself in the head causing big bruises, crying and screaming like there was something in his head and he couldn't get it out. He also didn't sleep much while the air freshener was in his room. It took two days to figure out what I had done to my beautiful boy and once I removed the offender and aired his room out naturally, within a 2-3 hour period he was his calm self again. I hope this can help someone. - Jackie, by email