Hi @Kelly753 : I see that frustration level from many hosts that share their space. I would have looked at your listing to see if I could have offered help in the description, but it does not appear on your profile.
However, I can offer this advice, when responding to a Booking Request or Inquiry, Ask the question (in some form) "Excuse me for being pedantic, but just making certain that you Do Understand that this is a room in my home? You Will be Sharing My home with me and my partner/family/pets/whatever applies. If so I will be happy to approve/preapprove your Request/Inquiry. If not, could you please cancel from your end (if it is a Request" As you know for Inquiry, all you have to do is Respond. If you don't get an answer within a couple hours of deadline on a Request, ask Airbnb to get involved, contact the guest/cancel the request from their end so you can save your Decline option for when it is truly needed. I have a pretty decent reponse rate when I send a question like that before accepting a booking when I Imply that I Will accept if/when they answer.
I capitalize my important points but just the first letter. It makes it stand out without the impression of all caps yelling :o/ Good Luck!