Update: All fixed!!
Regarding the toilet issue (emitting smells due to raised floor) - I wanted to say thanks to all.
@Robertsunrus - Great advice on the Sani Seal - worked like a charm. It's actually made to fit both home and RV (says so right on the seal). I did some digging into this seal and it turned out to be the best and easiest solution. So much so that my repairman thanked me for purchasing the seal ( $12 from HD) and went out and purchased a few to keep handy in his truck for future repairs. He had not heard of these particular seals and after watching the video, I found on it's web page, he was hooked. Took him 20 minutes to lift the toilet and place the seal. We tested it by turning the Fantasticfan on HIGH - no smells!!! Anyone looking to replace the seal on their toilet should really look into the Sani Seal. Clean, easy, fast, wax free, inexpensive.
So, the new Australian Cypress floor looks fantastic and the toilet issue is fixed. My wife is happy - which makes for happy full time Airstream adventure traveling.