Yeah, that’s my reason for not making my bed. 
Joking aside, I do think it is smart to let a bed air out after sleeping in it 6-8 hours. It is common in Europe and you’ll even see the duvets/feather beds hanging out windows in places like Switzerland.
I’m a little perplexed by the comments of not putting pillows on the floor. Maybe because it’s a no shoes house but I feel my bedroom floors get as much cleaning attention than any other surface in my bedroom, maybe more.