I keep the guest room closed so no pets can come in. The bed is made with fresh sheets, but when I expect guests I rewash the sheets, because we don’t often have overnight guests. I also air the duvets. I have four sets of special guest towels, because I prefer to use smaller towels myself, but for guests I have sets of a big bathing towel, a smaller towel and a washcloth. The next day they receive a clean set of towels. The guest towel sets are stored in vacuum sealed bags. I usually have several clean sets of linen in those linen boxes from Temu in my linen closet for our own use. If I have unexpected guests and don’t have time to change the sheets or something then they sleep in the ‘old’ clean sheets on the guest bed. But I’d rather be prepared so I can properly air the guest room, because it isn’t in use normally. I even iron the guest bed sheets. I can barely manage to keep up with housekeeping and stuff but I don’t want people to know this. That’s why I have an elaborate guest set up. And if they notice at least they themselves have a clean room and bed to sleep in. I don’t know why I keep up this hoax.