I don't think you're gross. i KNOW how it is . WE have so many flies here it's like a 3rd world country. EVERY SUMMER I say I'm moving because of them. We have SWARMS of them here NO LIE. It's from the corn and horse farms and Goats down the road and a freakin PIG FARM none the less ... that we didn't know EXISTED when we bought the house because it was WINTER and no wind that day

EVERY 2 days I have to scrub out my outside trash cans because millions of flies laying eggs and hatching MAGGOTS. If I wait a few days it looks slike a MAGGOT FARM.. It's SO GROSS. I bleach my cans once a week.
So all in all I KNOW it's gross but it can happen to the cleanest of us if there are tons of flies.. SHOOT... even just ONE
By the way..i'm sitting here typing with one hand holding a FLY SWATTER with the other