I have a neighbor who "borrows" my clothes line occasionally. I have hung out bedding and such since I retired but recently while wiping off the glass table top on the porch preparatory to eating lunch there I realized that all that nasty pollen was in the air and no wonder I was all plugged up every morning. I love the smell of percale sheets hung out but since I have to sleep with a CPAP there's not much point to that. I've traded that in for being able to breath when I get up.
Remember hanging out the gauze diapers? They got stained and looked bad because I didn't use bleach on them. DDs had no diaper rash. When I tried diaper service they looked nicer but one DD's behind was raw. That ultra violet light much have killed off the nasty bacteria that caused that.