There I was, in bed, in my happy place, when I thought I saw the tiniest flicker of a shadow and a slight buzzing noise.
Looked at the curtain and there was an enormous silhouette of a fly which was probably standing on the other side of the curtain.
Now the place smells like bug spray.
Not sure how they get in — unless the mosquito net is too loosely woven and they can crawl in by folding their wings etc.