Mastiff's have got to be the gasiest! We took in a mastiff that was found wandering our area. That dog had the worst gas and snored louder than any man I have ever heard. He slept beside our bed and I couldn't get a wink of sleep between the dog and my husband! Fortunately, the owner came forward (ex-wife had taken the dog and "let him go") so he went home.
How lucky can I be? I have 2 GSD's, open windows every chance I get, & the ceiling fans run 24/7. I have cans of Air Freshener all over the house, & burn scented candles, (not close to the source though!) I knew there was a reason some people didnt like coming inside (LOL), we always sit outside on the patio in the flower garden, at least it smells better. My 11 yr old is not as bad, but our newest baby (almost 8 mos), absolutely by far the WORST, its so bad, my neighbors probably get a wiff, LOL.
That list is pretty interesting! Right now we actually have a shih-tzu named sahsa! I think the shih-tzu was on the top 10 breed list, i think. And her name was on the popular list of names. We used 2 have a cocker spaniel and a rott, which were on the list for the gassiest dogs, and boy were they!. LOL! And right now we are in the process of getting an English bulldog, but cant seem to find any good breeders!