On Sun, 04 Sep 2016 18:05:49 +0100, alan_m wrote:

Perhaps add spearmint or peppermint.

To taste? ;-)

Seriously, this is where small calibre handguns come into their own.
Procure a .22" live shot pistol and one round of ammunition. Remove the
lead bullet from the cartridge casing, discard, and pack *soft* tissue
paper into the cartridge casing so as to keep the propellant explosive in
place. Insert the modified round into the pistol, position the muzzle
tightly against the outer ear so as to form a gas-tight seal, and
discharge the weapon. That should instantly clear the obstruction.
*NOTE:* only use *soft* tissue paper as anything else (like that awful
Izal stuff) may risk damaging the eardrum.