The plastic might burn.
fuse
you will choke and die
pritt stick
If only the plastic top portion is broken! which is usually what happens you can buy a new piece and snap it back on. the piece is called a funnel,usually a dealer item but you may find it on line
Well, you have almost invented the string can telephone!! Keep at it..second answer since ordinary string is not a conductor, you no longer have a circuit. Remember a circuit is a continuous path.
drain you oil and flush it out
They are usually plastic welded in place in the back of the dash panel that they are connected to. You need to replace the entire dash piece or drill out the vent piece and plastic weld or glue in a replacement piece
Unless it is in a place where you can glue it and it will not be noticable I would try to replace it. If you have the piece you can use a plastic welder to repair it.
U die
First remove the felt covered piece on the interior of the tailgate. After that, removed the large plastic piece in order to get inside to the bulb.
Consult your doctor, it sounds like you have a nasty ear infection developing.
You should be able to unscrew it and replace it with a new one. Pull the plastic piece off first.