I don't have any idea about vents for elevated disposals, but I just heard of a product to remove odors from garbage disposals. It is called Disposer Care (http://www.applianceaccessories.com/appliance/asp/products.asp?Param=PRODGRPNAME&Data=Food&Param2=ACSYCATGYDSPLYSEQNBR&Data2=1&src=overture). This is not an indorsement, just passing on information.