Me to I put them out telling them to fly away home,their house is on fire and their children alone (think that's how the verse goes ,will have to check with 5 year old grandson he seems to know most things ) similar case for the butterfly I keep finding in the window .I thought they were coming in but yes it is more likely they are wanting to get out.
I will start opening the Windows again .I have had them shut thinking that's how they were getting in!
I had one or two in my garden last week one was in my greenhouse
I have to let them out too. Next it will be the hornets. Been nesting in our attic for years. I have to usher them out of the landing window in the summer.