@colely -- at work I had a private office and kept the door closed to keep scents out. Years ago, I was suddenly smelling vanilla or something coming right through the vents and I felt so sick, had vertigo with the room spinning, couldn't even think plus more symptoms. I thought surely it was a plug-in air freshener, but couldn't find one anywhere in the office. After a couple miserable days, I had to contact HR which I did not want to do. They put the facilities manager on the case and he discovered that someone was selling scented candles to people in the office. They put out a memo to remove them. They didn't mention me, but some people knew I had perfume issues so I'm sure that didn't make me popular, but I was able to work again. Besides being a medical issue, it's a horrible social issue I wouldn't wish on anyone!