Interesting question, Alfred. Why do companies discontinue products that some people find useful? Probably because there are not enough people willing to pay the price. The Flush-Away toilets (the American Standard 2002 and 2003 series) were very expensive at the time, very complex, used a lot of water and I would have to say, not terribly effective at what the "extra" feature did - sucking the air from under the rim and out into the drain. I hope I don't sound too insensitive but some people, myself included, would have preferred to evacuate much more air than what the technique would allow, if you catch my drift (and pardon the pun). Â
You can install a wall-mounted bathroom exhaust fan like this Broan: