well I live some place where bats love go and it has never happened.
so no.
an umbrella
A chimney.
What may go down the chimney up but not down the chimney down?
ure shadow
An umbrella
An umbrella! It can go up a chimney when it's down because it's thin but cant go down a chimney up because its too big!
Bats and chimney swifts.
An umbrella
Smoke
Smoke
Yes. They have a long broom that goes down the chimney .
a chimney, or possibly a furnace, but id go with chimney