Comment by ninetyninenine
Comment by ninetyninenine 2 days ago
Yes but usually when the back door opens things are exiting the gut rather then going in. So I don’t think that counts.
There are cases where things do enter the back door but I think that’s just humans getting creative and it wasn’t designed for entry.
Its not like there is positive air flow keeping any microbes in the air out and away. If something lands on there it can probably colonize then spread to the inside slipping through the sphincter.