Put a sign up at the front of your castle. seriously :
get yourself an 8" electric fan on your kitchen window and leave it on 24/7 it will put your home in to negative pressure or
put in a second door frame with door in front of your outside door in your hallway to combat the smells going outside.
use an automatic air freshener called air wick freshmatic that squeezes an aerosol every 9,18 or 36 minutes you choose with a switch inside, if you put 2-3 of these inside your front door you wont smell a thing outside except fresh smells. i find linen is the best mask, the vanilla one is horrible.
i bought mine from semi chem £4.99 refills are cheaper.
it smeeeeeeeelllssss amazing outside my front door MmmmmmMMmmmmMMmm
i live in a high rise block of flats with 6 front doors on an enclosed landing.
and i had 12 barneys farm lsd.
http://www.ebay.co.uk/itm/Airwick-F...rden_CLV_Cleaning_CA&var=&hash=item9bffad4d48