A lot of people like to use "fabric softeners" that are heavily fragranced, and they also like to purchase plug-in oil wick "air fresheners" that soak into every porous surface as well as your lungs. This is in addition to the regular stuff. So it's not just VOCs anymore, but also HAPs--hazardous air pollutants.

Example, those clip-in auto air vent air fresheners that people buy for their cars. Spend 20 minutes in that person's car, notice how the next day your clothing still smells strongly of the oil-based air freshener. You were also inhaling that. And this is somehow perfectly fine?