A diffuser includes a base portion and a lid portion. The diffuser is
adapted to allow emanation of vapor from a burning block of combustible
material and contains a block receiving portion elevated from a surface of
the base portion. The block receiving portion has one or more grooves
formed in a top surface of the block receiving portion and extending below
the top surface of the block receiving portion. The base portion further
includes apertures forming channels extending from within the base portion
to an outer surface of the base portion. The lid portion is preferably
substantially pyramidal in shape and has an apex at an end remote from the
base portion. The lid portion further includes apertures positioned
towards the apex. In use, a burning block of combustible material,
impregnated with fragrance, is placed on the block receiving portion, and
the lid portion is placed over the block. The base and lid apertures,
together with the grooves in the block receiving portion, serve to
optimize the air flow within the diffuser, thus optimizing emanation of
the fragrance from the block.
