When I download a file in Firefox and click "Open containing Folder" it opens the folder in Baobab instead of PCMan FM.
I don't know how I ended up with this behaviour; I want Firefox to open it in PCMan FM.
I'm running LXDE on Debian 10.0.
$ mimetype ~/Downloads
/home/milo/Downloads: inode/directory
$ grep directory /etc/mime.types
# file in their home directory. Definitions included there will take
application/vnd.japannet-directory-service
application/vnd.noblenet-directory
inode/directory-locked
inode/directory
text/directory
$