Robbin, I've spent many a night with my face only inches from the Thetford potty and never had an issue. I've also got some PETT bags but am fortunate to have not needed to try them yet. Bill Riker M15 - #184 Storm Petrel -----Original Message----- From: robbin roddewig Sent: Saturday, July 09, 2011 5:36 AM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Head vs porta potti Hello listers, I just returned from a Boy Scout high adventure sailing around the FLA Keys on a Morgan 40. Not a very arduous trek! The head on the boat was a head where a foot lever opened a drop door directly into a holding tank under the toilet. The smell from this head permeated the whole boat which was hard to take. My boat needs a new head or porta potti and as I primarily day sail I was considering a porta potti for ease of installation and not having to pump out the holding tank. I also need to replace and rebuild all the plumbing for the head as well as the vent on the deck etc. Any advice on this trade? I have not had a porta potti nor a pump head on board so I do not know the pluses and minuses. I would not install the type of head we had on the Morgan. Thanks in advance! Robbin M-23 and M-10 _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats When posting, remember that there is no privacy on the Internet!