No fabric softener in my house, no dryer sheets either. I use unscented Kirkland powdered detergent for all my laundry.
A neighbour uses a highly scented laundry product, and when I smell it when their dryer is running, I get a migraine.
I once refused to take delivery of a car when they put a car 'freshener' in it. The dealer had to have it completely cleaned, at their expense, to remove the smell. It was in my contract that no air fresheners be in the vehicle.